CN204829061U - High -speed joint connects - Google Patents

Abstract

The utility model provides a quick connection joint, which comprises a male joint and a female joint. The male joint can be inserted into the female joint. Steel balls and card slots are respectively arranged on the contacting wall surfaces of the male joint and the female joint. Slot snap-in connection, the quick-connect joint also includes a propulsion device that is connected with the steel ball and pushes the steel ball to snap into the slot. The structure is simple, the operation is convenient, and quick installation is realized, ensuring the safe and stable operation of the quick-connect joint, and the sealing effect is good , suitable for a variety of medium environments, and at the same time realize the installation under pressure to ensure the stable circulation of the medium in the quick connection joint, and avoid pressure relief and medium leakage.

Description

A quick connect connector

technical field

The utility model belongs to the technical field of pipe connectors, in particular to a quick connection joint.

Background technique

Quick connectors include various fluid quick connectors, which are a connection device for quickly connecting or disconnecting pipelines and realizing quick disassembly. Since the quick connector has a two-way check function and the pipeline is disconnected without leakage, it is widely used in the fields of petroleum, metallurgy, hydropower, engineering machinery, ships, and electromechanical equipment. The connection structure of the quick connector is the most important part of the quick connector. Its connection method and structure directly determine the convenience, reliability and product quality of the quick connector.

The existing quick connectors generally have the following disadvantages: 1. Most of the quick connectors use other connection methods such as threaded connections, which have complex structures, high manufacturing costs, cannot realize quick connections, and consume labor. Second, the sealing effect is poor, and the medium circulating inside is prone to leakage. Especially for the transportation of gaseous media with high sealing requirements, the existing quick connectors are usually not up to the standard, resulting in gas leakage. 3. In the existing quick connectors, the internal structure of the male connector and the female connector is relatively complicated, and the operation of connecting the internal medium conduction channels of the male connector and the female connector is cumbersome and the conduction speed is slow. Moreover, when the male joint is inserted and disengaged, the leakage of the fluid medium and the pressure relief caused by the inflow of external gas often result, which affects the sealing effect.

Utility model content

In order to overcome the shortcomings of the quick-connect joints in the prior art that cannot be quickly installed and have poor sealing performance, the utility model provides a quick-connect joint with simple structure and convenient operation, which realizes quick installation and ensures the safe and stable work of the quick-connect joints, and The sealing effect is good, and it is suitable for a variety of medium environments. At the same time, it can be installed under pressure to ensure the stable circulation of the medium in the quick-connect joint and avoid pressure relief and medium leakage.

The technical solution adopted by the utility model to solve the technical problem is: a quick-connect joint, including a male joint and a female joint, the male joint can be inserted into the female joint, and the feature is that the male joint and the female joint are in contact Steel balls and card slots are respectively set on the wall surface, and the steel balls are snapped and connected with the card slots. The quick connection joint also includes a propulsion device that is connected with the steel balls and pushes the steel balls to snap into the card slots, which realizes quick installation, is convenient and fast, and ensures quick connection The joints work safely and stably.

The propulsion device is a first elastic member connected to the steel ball provided on one of the male joint and the female joint. The direction of the elastic force of the first elastic member is perpendicular to the axis of the male joint. The first elastic member is used to push the steel ball to move to It is snapped into the card slot provided on the other of the male connector and the female connector, the structure is simple, and quick installation can be realized without manual operation.

The propulsion device includes a bump on the female joint and a return spring on one side of the bump. The other side of the bump is in contact with the steel ball. The return spring is used to push the bump up and down so that the steel ball snaps in or out of the setting. The card slot on the male joint has a simple structure and saves labor time and labor for workers.

Preferably, the female joint includes an inner sleeve and an outer sleeve, the outer sleeve is detachably sleeved on the inner sleeve, the outer sleeve is provided with a protrusion extending toward the inner sleeve, and the inner sleeve is provided with a steel ball limit opening for accommodating steel balls. The inner sleeve is located below the limit opening of the steel ball and is provided with an inner sleeve clamping platform extending towards the direction of the outer sleeve. A return spring cavity is formed between the inner sleeve clamping platform and the protrusion, and a return spring is arranged in the reset spring cavity;

Among them, an upper limit piece is set on the outer wall of the female joint, and a lower limit piece is set on the outer wall of the female joint below the return spring, which limits the range of the return spring’s up and down movement, protects the return spring, and ensures the normal stability of the quick connect joint. Work.

There are seals on the contacting wall surfaces of the male joint and the female joint after they are plugged in, and they are tightly pressed and sealed. The seals are set under the steel ball, and the sealing effect is good. It is suitable for various medium environments and avoids the possibility of medium leakage. Phenomenon.

Preferably, the sealing member is a sealing ring, and the sealing ring includes a first sealing ring and a second sealing ring, the first sealing ring is arranged on the wall surface of one of the male joint and the female joint, and the second sealing ring is arranged on the wall surface of the male joint and the female joint. On the wall surface of the other one of the joints, the first sealing ring and the second sealing ring are tightly pressed and sealed.

Preferably, the seal is a combination of a sealing ring and a sealing platform, the sealing ring is arranged on the wall of one of the male joint and the female joint, the sealing platform is arranged on the wall of the other of the male joint and the female joint, and the sealing platform and The sealing ring is tightly pressed and sealed;

Wherein, the sealing platform is a sealing protrusion arranged on the outer wall of the male joint or the inner wall of the female joint, and the surface where the sealing protrusion contacts the sealing ring is an inclined plane.

A sealing device is provided inside the male joint and the female joint, and the sealing device is a one-way flow valve or a pushing structure;

Wherein, the pushing structure is a structure in which relative displacement is generated by mutual pushing to open or close the internal medium circulation channel after the male joint and the female joint are plugged together. Realized installation under pressure, good sealing effect, avoiding pressure release, medium leakage and other phenomena.

Preferably, the pushing structure is a thimble member, and the thimble member is provided inside the male joint and the female joint, and the thimble member inside the male joint is symmetrically arranged with the thimble member inside the female joint, and pushes into contact;

Wherein, the thimble member includes a first mounting seat and a fixing plate fixed inside the male joint or the female joint, and a second elastic member is arranged on the first mounting seat, and the second elastic member is connected with the thimble, and the thimble rests against the set The fixed plate of the gap, and seal the gap;

In addition, the first installation seat is provided with a through hole for medium circulation.

Preferably, the pushing structure is a combination of a thimble member and an opening member, and a thimble member is arranged inside one of the male joint and the female joint, and an opening member is arranged inside the other of the male joint and the female joint, and the thimble member is Pushing contact with the opening member;

Wherein, the opening member is a second mounting seat, and the second mounting seat is provided with a through hole for medium circulation, and the contact between the second mounting seat and the thimble member is a solid structure;

Or, the opening member includes a positioning seat of a solid structure, and a contact opening device is provided on the positioning seat, and the contact opening device pushes and contacts with the thimble member. A device that produces dislocation displacement between the contact opening device and the positioning seat.

The beneficial effects of the utility model are as follows: firstly, fast installation is realized, the safe and stable work of the quick-connect joint is ensured, and the working efficiency is improved;

Second, the sealing effect is good, suitable for a variety of media environments, to avoid the phenomenon of media leakage;

3. Realize the installation under pressure, the sealing effect is good, ensure the stable circulation of the medium in the quick connection joint, and avoid pressure relief, medium leakage and other phenomena;

Fourth, the structure is simple, the operation is convenient, and the cost is saved.

Description of drawings

The quick connection joint described in the utility model is described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of the sealing ring type of the male joint in an embodiment of the quick-connect joint propulsion device of the present invention;

Fig. 2 is a structural schematic diagram of a sealing ring type of a female joint in an embodiment of the quick-connect joint propulsion device of the present invention;

Fig. 3 is a structural schematic diagram of the sealing ring type of the female joint in another embodiment of the quick connection joint propulsion device of the present invention;

Fig. 4 is a schematic diagram of the structure of the male joint sealing platform in another embodiment of the quick connection joint propulsion device of the present invention;

Fig. 5 is a schematic structural view of the sealing platform of the female joint in another embodiment of the quick-connect joint propulsion device of the present invention;

Fig. 6 is a schematic diagram of the plug-in connection between the male joint and the female joint in another embodiment of the quick connection joint propulsion device of the present invention;

Fig. 7 is a structural schematic diagram of an embodiment of the internal sealing device of the male joint of the quick-connect joint of the present invention;

Fig. 8 is a structural schematic diagram of an embodiment of the internal sealing device of the quick-connect joint female joint of the utility model;

Fig. 9 is a structural schematic diagram of another embodiment of the internal sealing device of the quick-connect joint female joint of the present invention;

Fig. 10 is a schematic structural view of the first positioning ring of the present invention;

Fig. 11 is a structural schematic diagram of the first installation ring of the present utility model;

Fig. 12 is a schematic structural view of the positioning seat in another embodiment of the internal sealing device of the quick-connect joint of the present invention.

As shown in the figure, the male joint 1; the female joint 2, the inner sleeve 21, the steel ball limit opening 211, the inner sleeve card table 212, the outer sleeve 22, the protrusion 221, the return spring chamber 23, the return spring 24, and the upper limit member 25 , lower limit piece 26; steel ball 3; card slot 4; first elastic member 5, receiving groove 51; guide port 6; sealing ring 7, first sealing ring 71, second sealing ring 72; sealing platform 8, sealing bump 81; thimble member 9, first mounting seat 91, first positioning ring 911, first mounting groove 912, first mounting ring 913, fixed plate 92, gap 921, second elastic member 93, thimble 94, ejector rod 95, The third sealing ring 96 ; the opening member 10 , the second installation seat 101 , the positioning seat 102 , and the contact opening device 103 .

Detailed ways

As shown in FIGS. 1-6 , the quick connection joint described in the present invention includes a male joint 1 and a female joint 2 , and the male joint 1 can be inserted into the female joint 2 . Steel balls 3 and card slots 4 are respectively provided on the wall surfaces where the male joint 1 and the female joint 2 are in contact when plugged in, and the card slots 4 are recessed inwardly, then the steel balls 3 and the card slots 4 are engaged and connected, that is, the steel balls 3 are engaged in the card slots. The groove 4 prevents the movement of the male connector 1 in the female connector, so as to achieve locking. In order to quickly and accurately engage the steel ball in the slot, the quick connection connector also includes a propulsion device, which is connected to the steel ball 3, and is used to push the steel ball 3 to engage in the slot 4, thereby realizing quick connection and a simple structure. It is easy to operate and saves the time and labor of the staff.

There can be one, two or more steel balls 3. In order to better engage with the card slot 4 to achieve locking, in this embodiment, six steel balls 3 are provided. The slot 4 can be a small slot at the position corresponding to the steel ball, or an annular slot can be provided on the outer wall of the male joint or the inner wall of the female joint along the circumference.

As shown in Figures 1 and 2, the propulsion device is to set a first elastic member 5 on one of the male joint 1 and the female joint 2, and the first elastic member 5 is connected to the steel ball 3, and the corresponding The other one of the female joints 2 is provided with a slot 4 at a position corresponding to the steel ball, and the steel ball 3 is set in cooperation with the slot 4 . That is to say, if the first elastic member 5 is set on the male joint 1, then the slot 4 is correspondingly set on the position corresponding to the steel ball on the female joint 2; if the slot 4 is set on the male joint 1, then the corresponding A first elastic member 5 is provided on the female joint 2 at a position corresponding to the steel ball. The direction of the elastic force of the first elastic member is perpendicular to the axis of the male joint, and correspondingly perpendicular to the axis of the female joint. In this way, the steel ball 3 can be locked with the card slot 4 without manual operation, which is convenient and quick, and improves work efficiency.

As shown in Figure 2, further, on the outer wall of the male joint 1 or the outer wall of the female joint 2, an inwardly recessed accommodation groove 51 is provided, and a first elastic member 5 is arranged in the accommodation groove, and the first elastic member 5 and the steel ball 3 fixed connections. The fixing of the receiving groove 51 and the first elastic member 5 and the fixing of the first elastic member 5 and the steel ball 3 may be welded connection, adhesive connection and the like.

The first elastic member 5 can be a spring, an elastic ring or other devices with certain elasticity. In this embodiment, the first elastic member 5 is a spring as an example.

As shown in Figures 1 and 2, specifically, the working process of the first elastic member 5 pushing the steel ball 3 to move and engage in the slot 4 is as follows: set the slot 4 on the outer wall of the male joint, and connect it to the inner wall of the female joint. A receiving groove 51 is defined at a position corresponding to the card slot, and a first elastic member 5 is arranged in the receiving groove, and the first elastic member 5 is fixedly connected with the steel ball 3 . When the male joint 1 is inserted into the female joint 2, the outer wall of the male joint contacts the steel ball 3, and the male joint 1 continues to move, the outer wall of the male joint will push the steel ball 3, and then the first elastic member 5 will be compressed. The thrust makes the steel ball 3 and the first elastic member 5 move toward the female joint in a direction perpendicular to the axis of the male joint until the steel ball 3 and the first elastic member 5 are compressed into the receiving groove 51, and the male joint 1 is smoothly inserted into the female joint 2 within. Since the outer wall of the male joint is provided with an inwardly recessed card slot 4, when the card slot 4 moves to the receiving groove 51, the pushing force of the male joint 1 on the steel ball is reduced, and under the action of the restoring force of the first elastic member 5 Next, the steel ball 3 moves toward the male joint in a direction perpendicular to the axis of the male joint until the steel ball 3 is pushed into the slot 4 to realize the locking of the male joint 1 and the female joint 2 .

It is also possible to set a card slot 4 on the inner wall of the female joint, set up a receiving groove 51 at a position corresponding to the card slot on the outer wall of the male connector, and set the first elastic member 5 in the receiving groove 51, and the first elastic member 5 It is fixedly connected with the steel ball 3.

As shown in Figures 1, 3, 4, 5, and 6, the propulsion device can also have such a structure, including a bump 221 arranged on the female joint and a return spring 24 on one side of the bump, and the other side of the bump 221 The side contacts and connects with the steel ball 3. Correspondingly, a locking groove 4 is provided on the male joint 1 at a position corresponding to the steel ball. The function of the return spring is to push the bump up and down so that the steel ball 3 snaps into or moves out of the slot 4 .

As shown in FIGS. 3 and 5 , the female connector 2 includes an inner sleeve 21 and an outer sleeve 22 , and the outer sleeve 22 is detachably sleeved on the inner sleeve 21 . A protrusion 221 extending toward the inner sleeve is provided on the outer sleeve 22 for pushing the movement of the steel ball. A steel ball limit opening 211 is provided on the inner sleeve 21 for accommodating the steel ball 3 , and is arranged in cooperation with the protrusion 221 to facilitate the pushing of the steel ball by the protrusion 221 . The inner sleeve is located below the steel ball limit opening and is provided with an inner sleeve clamping platform 212. The inner sleeve clamping platform 212 extends toward the direction of the outer sleeve. A return spring cavity 23 is formed, and a return spring 24 is arranged in the return spring cavity 23 . The return spring 24 can be fixed with the inner sleeve card platform 212 or the protrusion 221 , or can be placed in the return spring cavity 23 .

As shown in Figures 3 and 5, the return spring 24 is arranged under the protrusion. When the male joint 1 is inserted into the female joint 2, the corresponding protrusion 221 moves downward by compressing the return spring, and the steel ball 3 loses the push of the protrusion 221. force, it slides out of the card slot 4 and the steel ball limit opening 211, so that the male joint 1 can move freely in the female joint. Release the return spring 24, and the return spring 24 pushes the protrusion 221 under the action of the restoring force, so that the protrusion 221 moves upward, pushes the steel ball 3 into the steel ball limit opening and then engages with the card slot 4 to realize locking.

The diameter of the steel ball limit opening gradually increases from the inner wall of the inner sleeve to the outer wall of the inner sleeve, forming a tapered structure in cross section, which is convenient for the steel ball 3 to slide into or out of the steel ball limit opening 211, so that the male joint and The locking between the female connectors is convenient and sensitive, and the phenomenon of locking failure caused by the steel ball 3 being stuck is avoided. The diameter of the steel ball limiting opening 211 located at the inner wall of the inner sleeve is smaller than the diameter of the steel ball, so that the steel ball 3 is limited in the steel ball limiting opening 211, preventing the steel ball 3 from detaching from the female joint 2, and ensuring the normal operation of the steel ball 3 and the slot 4.

As shown in Figures 3 and 5, an upper limit member 25 is provided on the outer wall of the female joint, specifically an upper limit member 25 is provided on the top of the outer wall of the inner sleeve. Cooperate with the inner sleeve 21 to work normally, and prevent the outer sleeve 22 from being pushed out of the inner sleeve 21 when the restoring force of the return spring is large, causing the two to break away.

As shown in Figures 3 and 5, a lower limiter 26 is provided on the outer wall of the female joint below the return spring, specifically, the lower limiter 26 is arranged on the outer wall of the inner sleeve below the return spring cavity, and the lower limiter Effect is to limit the downward compression of back-moving spring, avoid back-moving spring 24 unlimited compression, prevent that overcoat 22 moves down to back-moving spring 24 and cause damage, protect back-moving spring 24, prolong the service life of back-moving spring.

The structure of the upper limit piece and the structure of the lower limit piece can be the same or different, including limit cards, limit blocks, etc., or a limit groove can be set on the outer wall of the inner sleeve, and O-shaped steel can be arranged in the limit groove Ring, preferably, the O-shaped steel ring is an open type, which is snapped into the limiting groove by the elastic force of the open-shaped O-shaped steel ring itself, and can be reused without fixed connection, saving steps.

As shown in Figures 3, 5, and 6, the top end of the female connector and/or the bottom end of the male connector are provided with a guide port 6 when plugging in, that is, only the top end of the female connector is provided with a guide port 6 or only at the bottom of the male connector. The bottom end is provided with a guide opening 6, or both the top end of the female joint and the bottom end of the male joint are provided with a guide opening 6, so that the male joint can be inserted into the female joint conveniently and quickly. Wherein the guide port 6 is a slope inclined from the outer wall to the inner wall.

As shown in Figure 6, specifically, the return spring 24 pushes the protrusion to move up and down to make the steel ball 3 snap into or move out of the slot 4. When the spring 24 is compressed, the projection 221 on the overcoat loses the pushing force of the return spring, and moves downward with the return spring 24 under the action of gravity, and the steel ball 3 moves along the steel ball limit under the action of gravity due to the loss of the restriction of the projection. The cone of the hole moves downward. The return spring 24 is gradually compressed, and the protrusion 221 and the steel ball 3 move downward together until the steel ball 3 completely or partially slides out of the steel ball limit opening 211, and then there is no longer any protrusion on the inner wall of the inner sleeve. At this time, insert the male connector inside the female connector. The male joint 1 moves freely in the female joint 2 until the card slot 4 moves to the steel ball limit opening, loosen the jacket 22, and the return spring 24 bounces upward under the action of the restoring force, pushing the protrusion 221 to move upward, and the protrusion 221 moves upward. 221 pushes the steel ball 3 along the tapered surface of the steel ball limit opening and slides into the steel ball limit opening, and the protrusion 221 continues to push the steel ball 3 until the steel ball 3 is completely pushed into the steel ball limit opening, and at the same time pushes the steel ball 3 into the steel ball limit opening. The steel ball 3 pushes into the card slot 4, so that the steel ball 3 is engaged in the card slot 4 to realize locking.

When dismounting, first apply an external force to the jacket 22 to compress the return spring 24, and the protrusion 221 moves downward, and the steel ball 3 loses the thrust of the protrusion and moves downward along the cone surface of the steel ball limit opening until the steel ball 3 completely or partially slides. Out of the steel ball limit opening 211, there is no longer any protrusion on the inner wall of the inner sleeve. At this time, the male joint 1 is pulled out of the female joint 2 to complete the disassembly.

As shown in Figure 1-6, the male joint 1 and the female joint 2 are locked in the slot through the steel ball, so that the positions of the male joint and the female joint are relatively fixed and the relative movement of the two is prevented. There are seals on the contacting wall surfaces of the male joint 1 and the female joint 2 after they are plugged in, and they are tightly pressed and sealed, so that the sealing effect is better and the phenomenon of medium leakage is avoided. It is suitable for various medium environments, especially suitable for in gas. The seal is arranged under the steel ball, which not only prevents the leakage of the internal medium, but also prevents the medium leakage caused by the gap between the steel ball 3 and the card groove 4, thereby achieving a better sealing effect.

There can be one pair, two pairs, or more pairs of seals. Multiple pairs of seals are layered from top to bottom on the wall surface where the male joint 1 and the female joint 2 are in contact, realizing multiple seals with good sealing effect, ensuring the smooth passage of the internal circulating medium and effectively preventing leakage.

As shown in FIGS. 1 , 2 , 3 and 6 , specifically, the sealing member may be a sealing ring 7 . The sealing ring 7 includes a first sealing ring 71 and a second sealing ring 72. The first sealing ring 71 is arranged on the wall surface of one of the male joint 1 and the female joint 2, and the second sealing ring 72 is arranged on the wall surface of the male joint 1 and the female joint. 2 On the wall surface of the other one, the first sealing ring 71 and the second sealing ring 72 are tightly pressed and sealed. That is to say, if the first sealing ring 71 is set on the outer wall of the male joint, then the second sealing ring 72 is correspondingly set on the inner wall of the female joint; it is also possible to set the second sealing ring 72 on the outer wall of the male joint, then Correspondingly, a first sealing ring 71 is provided on the inner wall of the female joint. In this way, after the male joint and the female joint are locked and fixed, the first sealing ring 71 and the second sealing ring 72 are tightly pressed together to realize sealing.

As shown in FIGS. 4 and 5 , specifically, the sealing member may also be a combination of a sealing ring 7 and a sealing table 8 . The sealing ring 7 is arranged on the wall surface of one of the male joint 1 and the female joint 2, the sealing table 8 is arranged on the wall surface of the other one of the male joint 1 and the female joint 2, the sealing table 8 and the sealing ring 7 Tight press-fit seal. That is to say, if the sealing platform 8 is set on the outer wall of the male joint, then the sealing ring 7 is correspondingly set on the inner wall of the female joint; A sealing platform 8 is arranged on the inner wall. In this way, after the male joint and the female joint are locked and fixed, the sealing platform 8 and the sealing ring 7 are tightly pressed together to realize sealing.

As shown in FIG. 4 , the sealing platform 8 is a sealing protrusion 81 arranged on the outer wall of the male joint or the inner wall of the female joint. The shape of the sealing bump 81 can be square, circular, elliptical or irregular.

As shown in FIG. 4 , in this embodiment, the contact surface of the sealing bump 81 and the sealing ring 7 is an inclined surface, so the sealing ring 7 and the inclined surface of the sealing bump 81 are tightly pressed to achieve a better sealing effect.

Preferably, the sealing table 8 is a non-elastic structure, which can be made of the same material as the male joint, or steel, wood, etc. While the sealing ring 7 has a certain degree of elasticity, the combination of the sealing ring 7 and the sealing platform 8 can achieve better press-fit sealing and prevent medium leakage.

In the sealing member of the same layer, a plurality of sealing platforms 8 may be arranged at intervals at positions corresponding to the sealing rings. It is also possible to arrange a ring of sealing platform 8 along the circumference at a position corresponding to the sealing ring.

As shown in Figures 1-3, 5 and 6, preferably, an inwardly recessed sealing groove can be provided on the outer wall of the male joint or the inner wall of the female joint, and the sealing ring 7 is arranged in the sealing groove. And the sealing ring 7 is full of the sealing groove, that is, the sealing ring 7 is in contact with the three groove surfaces of the sealing groove, so even if the sealing ring 7 and any side of the sealing groove are worn, the sealing performance will not be affected, and the leakage caused by the abrasion will be avoided. In addition, after the sealing ring 7 undergoes interference compression deformation in the sealing groove, it is tightly sealed with both sides of the sealing groove, and at the same time, the radial expansion force of the sealing ring is increased, and the sealing performance is further improved.

As shown in Figure 7-9, the male joint 1 and the female joint 2 are locked in the slot 4 through the steel ball 3, so that the positions of the male joint and the female joint are relatively fixed and the relative movement of the two is prevented. There is a sealing device inside the male joint and the female joint. The sealing device is used to control the conduction or closure of the internal medium circulation channel after the male joint and the female joint are plugged together, which realizes the installation under pressure, and the sealing effect is good, ensuring fast The stable circulation of the medium in the connection joint avoids pressure relief and leakage.

The sealing device is a one-way flow valve such as a one-way valve, a ball valve, etc., or a pushing structure.

For example, if a one-way valve is provided inside the male joint and the female joint, then the male joint 1 is inserted into the female joint 2 and locked, so that the two are relatively fixed. When the one-way valve is opened, the internal medium flow channel is conducted. When the quick connection joint needs to be disconnected, the one-way valve is closed, and the internal medium circulation channel is closed. One-way flow valves such as one-way valves and ball valves can be arranged inside the male joint and the female joint to control the conduction or closure of the internal medium flow passage. Wherein, the valves provided inside the male joint and the female joint may be the same valve or different valves, or may be provided only inside the male joint, or may be provided only inside the female joint.

As shown in Figures 7-9, specifically, the pushing structure is a structure that generates relative displacement through mutual pushing to open or close the internal medium circulation channel. By setting the pushing structure inside the male joint and the inside of the female joint, after the male joint 1 and the female joint 2 are locked, the internal pushing structures contact each other and generate a pushing force, and a relative force is generated under the action of the pushing force. Displacement, forming a gap, so as to conduct the medium flow channel. The male joint 1 and the female joint 2 are disconnected and locked, and the male joint 1 is pulled out of the female joint 2, then the internal pushing structure loses the pushing force and returns to the original state, the medium circulation channel is closed, and the seal is realized.

As shown in Figures 7 and 8, specifically, the pushing structure can be a thimble member 9, which is provided with a thimble member 9 inside the male joint and inside the female joint, and the thimble member 9 inside the male joint and the thimble member 9 inside the female joint It is set symmetrically and pushes the contact.

As shown in FIGS. 7 and 8 , the thimble member 9 includes a first mounting base 91 and a fixing plate 92 fixed inside the male connector or the female connector. A second elastic member 93 is disposed on the first installation seat 91 , and the second elastic member 93 is connected with the thimble 94 for pushing the thimble to move up and down. One end of the thimble is connected to the second elastic member 93 , and the other end leans against the fixed plate 92 provided with a notch, and the thimble 94 blocks the notch 921 on the fixed plate. The structure is simple and easy to operate.

That is to say, the thimble member 9 includes a first mounting seat 91 , a fixing plate 92 with a notch, a second elastic member 93 and a thimble 94 . A first mount 91 and a fixed plate 92 are arranged inside the male joint or the female joint, and there is a certain interval between the first mount 91 and the fixed plate 92, and the second elastic member 93 and the fixed plate 92 are arranged in this interval. The thimble 94 , the thimble 94 is connected with the second elastic member 93 and blocks the gap 921 on the fixing plate, and the second elastic member 93 is arranged on the first installation base 91 .

As shown in Figures 7, 8, and 10, the first mounting base 91 is provided with a through hole for the medium to flow through. Specifically, the first mounting base 91 includes a first positioning ring 911, and the first positioning ring 911 is provided with a through hole for the circulation of the medium, so as to facilitate the flow of the medium when the medium circulation channel is conducted. The second elastic member 93 can be fixedly connected with the first positioning ring 911 . It is also possible that the first positioning ring 911 is a solid structure where it contacts the second elastic member 93 , and the second elastic member 93 is placed between the first positioning ring 911 and the fixing plate 92 .

As shown in Figures 7, 8, 10, and 11, preferably, the first mounting seat 91 also includes a first mounting ring 913 and a first mounting groove 912, and a first mounting ring 913 is provided on the inner wall of the male joint or the inner wall of the female joint. The groove 912 and the first installation ring 913 are detachably arranged in the first installation groove 912, which is convenient for installation and replacement, and can be used repeatedly. The first positioning ring 911 is fixed on the first mounting ring. And the first mounting ring is provided with a through hole for medium circulation, so that after the medium flows through the through hole on the first positioning ring, it continues to pass through the through hole on the first mounting ring, and the medium passes through the male joint 1 and the female Smooth flow in joint 2.

As shown in Figure 11, specifically, the first installation ring 913 can be an open O-shaped steel ring, and the opening of the open O-shaped steel ring is closed by pliers or other tools, so that the O-shaped steel ring is reduced, and it is put into the second O-shaped steel ring. In the first installation groove 912 , loosen the pliers, and the O-shaped steel ring will gradually enlarge under the action of the elastic restoring force, and then be engaged in the first installation groove 912 .

As shown in FIGS. 7 and 8 , more preferably, one end of the thimble blocks the gap 921 on the fixing plate, and the other end fixes a push rod 95 , and the second elastic member 93 is sheathed on the push rod 95 . Correspondingly, an opening is provided on the first positioning ring corresponding to the ejector pin, and the diameter of the opening is slightly larger than that of the ejector pin, so that the ejector pin 95 can move in the opening, but has a certain friction. The connection between the push rod 95 and the thimble 94 is to make the thimble 94 in the correct position, just in time to block the gap 921 on the fixed plate, preventing the thimble 94 from running off and unable to block the gap 921 to cause medium leakage.

The second elastic member 93 can be an elastic device such as a spring, an elastic ring, etc. In this embodiment, a spring is used as an example. The function of the second elastic member is to push the thimble to move up and down.

As shown in Figures 7 and 8, a third sealing ring 96 is provided at the contact between the thimble 94 and the notch 921 on the fixing plate to ensure a tight seal when the medium flow channel is not conducted to prevent pressure release or medium leakage.

The shape of the thimble 94 can be any shape, as long as it can block the gap 921 on the fixing plate. As shown in FIGS. 7 and 8 , preferably, the thimble 94 is conical in shape.

As shown in Figures 7 and 8, the working process of the thimble member 9 is as follows: the male joint 1 is inserted into the female joint 2, and when the male joint 1 enters a certain depth of the female joint, the thimble 94 inside the male joint and the inside of the female joint The thimbles 94 are in contact with each other to generate thrust. As the male joint 1 is continuously inserted downward, the thrust force gradually increases. Since one end of the thimble is connected to the second elastic piece 93, the pushing force will respectively compress the second elastic piece 93 inside the male joint and the second elastic piece 93 inside the female joint, and the second elastic piece 93 will move toward the direction of the first mounting seat. The movement causes misalignment between the thimble 94 and the fixing plate 92, and opens the notch 921 on the fixing plate, thereby conducting the internal medium circulation channel. The flowing medium passes through the notch 921 on the fixing plate, and then passes through the through hole on the first positioning ring, so as to realize the flow of the medium in the male joint and the female joint.

When it is necessary to close the medium circulation channel, the lock between the male joint and the female joint is disconnected, and the male joint 1 is pulled out of the female joint 2, then the thimble 94 inside the male joint and the thimble 94 inside the female joint The pushing force decreases, and the compressed second elastic member 93 bounces up gradually under the action of the restoring force, and the pushing pin 94 moves toward the notch on the fixing plate until the thimble 94 is pushed to the notch on the fixing plate, completely sealing The notch 921 is blocked to close the medium circulation channel and realize sealing.

If the ejector pin 94 is connected with the ejector pin 95, then the ejector pin 94 drives the ejector pin 95 to move together when moving, and since the first positioning ring is provided with an opening corresponding to the ejector pin, the ejector pin 95 can move up and down in the aperture.

As shown in Figures 7 and 9, specifically, the pushing structure can also be a combination of the thimble member 9 and the opening member 10, and the thimble member 9 is arranged inside one of the male joint 1 and the female joint 2, and the thimble member 9 is arranged inside the male joint 1. An opening member 10 is provided inside the other one of the female joint 2, and the thimble member 9 is in pushing contact with the opening member 10. That is, if the thimble member 9 is set inside the male joint, then the opening member 10 is set inside the corresponding female joint; if the opening member 10 is set inside the male joint, then the thimble member 9 is set inside the corresponding female joint. Through the pushing force of the thimble member 9 and the opening member 10, a relative displacement is generated to form a gap, thereby conducting the medium flow channel.

As shown in Figure 9, wherein, the opening member 10 can be a second mounting base 101, the structure of the second mounting base 101 is similar to that of the first mounting base, and the second mounting base 101 is provided with a channel for the medium to circulate. hole, but the contact between the second mounting seat 101 and the thimble member 9 is a solid structure. In this case, there is no medium present in the joint in which the opening member is provided initially, which is an empty connection joint. When the male connector 1 is inserted into the female connector 2, the ejector pin 94 of the thimble member is in contact with the solid structure on the second mounting seat to generate a thrust force. As the male connector is continuously inserted into the female connector, the thrust force gradually increases. The second mounting seat 101 is fixed, and the thrust force continuously compresses the second elastic member 93, so that the thimble 94 moves toward the first mounting seat, and a misalignment displacement occurs between the thimble 94 and the fixing plate 92, and the gap on the fixing plate is removed. 921 is opened, thereby conducting the medium circulation channel. The flowing medium flows to the second mounting base 101 through the gap 921 on the fixing plate, and passes through the through hole on the second mounting base to realize the flow of the medium in the male joint and the female joint.

As shown in Figure 12, wherein, the opening member 10 can also be a positioning seat 102 comprising a solid structure, and a contact opening device 103 is provided on the positioning seat 102, and the contact opening device 103 is pushed into contact with the thimble member 9 . Wherein, the contact opening device 103 is a device that produces misalignment displacement between the contact opening device 103 and the positioning seat 102 through the pushing force of the thimble 94 and the opening member 10 . In this embodiment, the positioning seat 102 can be a solid plate, on which the contact opening device 103 is arranged.

It is also possible that the positioning seat 102 also includes a positioning ring and a positioning groove, and a positioning groove is provided on the inner wall of the male joint or the inner wall of the female joint, and the positioning ring is detachably arranged in the positioning groove, which is convenient for installation and replacement, and can be repeated. use. The positioning seat is fixed on the positioning ring, and the positioning ring is provided with a through hole for medium circulation. Specifically, the positioning ring can be an open-type O-shaped steel ring, and the opening of the open-type O-shaped steel ring is closed by pliers or other tools to make the O-shaped steel ring shrink, put it into the positioning groove, and loosen the pliers, then O The shaped steel ring gradually enlarges under the action of the elastic restoring force, and then snaps into the positioning groove.

As shown in Figure 12, preferably, the contact opening device 103 can be a movable block that can be recessed downwards on the positioning seat, and the movable block and the positioning seat 102 are connected by a telescopic device. At this time, the movable block and the positioning seat 102 form a flat solid structure without any gaps to realize sealing. When the male joint is inserted into the female joint, the thimble 94 of the thimble member is in contact with the movable block on the positioning seat to generate a thrust force. As the male joint is continuously inserted into the female joint, the thrust force gradually increases, and the telescopic device is triggered. The movable block is depressed downward, that is, a dislocation displacement occurs between the movable block and the positioning seat 102, forming a gap; at the same time, the pushing force continuously compresses the second elastic member 93, so that the thimble 94 moves toward the direction of the first mounting seat, and the thimble 94 is in contact with the fixed seat. Dislocation displacement occurs between the plates 92, opening the notch 921 on the fixed plate, so as to conduct the medium circulation channel. The flowing medium sequentially passes through the notch 921 on the fixed plate, the gap between the movable block and the positioning seat 102 to realize the flow of the medium in the male joint and the female joint.

The above descriptions are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Without departing from the scope of the technical solution of the utility model, the technicians of this patent may use the technical content of the above prompts to make some changes or modify them into equivalent embodiments with equivalent changes, but all do not depart from the content of the technical solution of the utility model Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the solution of the utility model.

Claims (10)

1. a fast connecting joint, comprise tool joint pin (1) and female joint (2), described tool joint pin (1) can be inserted in female joint (2), it is characterized in that, described tool joint pin with the wall contacted during female joint grafting is arranged respectively steel ball (3) and draw-in groove (4), described steel ball (3) and draw-in groove (4) are connected together, and described fast connecting joint also comprises being connected with described steel ball and promoting described steel ball card and is combined in advancing means in described draw-in groove.

2. a kind of fast connecting joint according to claim 1, it is characterized in that, described advancing means is the first elastic component (5) be connected with steel ball one of them arranged in tool joint pin and female joint, the resilient force direction of described first elastic component is perpendicular to the axis of tool joint pin, and described first elastic component (5) is mobile to be fastened in the draw-in groove (4) that is arranged on tool joint pin and female joint wherein another for promoting steel ball (3).

3. a kind of fast connecting joint according to claim 1, it is characterized in that, described advancing means comprises the projection (221) be arranged in female joint and the Returnning spring (24) being positioned at projection (221) side, the opposite side of described projection (221) contacts with steel ball (3) and connects, and described Returnning spring (24) is for promoting the draw-in groove (4) moving up and down to make steel ball (3) snap in or shift out to be arranged in tool joint pin of projection.

4. a kind of fast connecting joint according to claim 3, it is characterized in that, described female joint (2) comprises inner sleeve (21) and overcoat (22), put in described overcoat (21) is removably set in, described outer cover is provided with the projection (221) extended to inner sleeve direction, the spacing perforate of steel ball (211) of offering and holding steel ball is put in described, the inner sleeve chuck (212) being provided with below the spacing perforate of steel ball and extending in the direction of the jacket is positioned in described inner sleeve, Returnning spring chamber (23) is formed between described inner sleeve chuck (212) and projection (221), described Returnning spring (24) is set in described Returnning spring chamber,

Wherein, the outer wall of described female joint is provided with upper limit part (25), the outer wall being positioned at below Returnning spring of described female joint is provided with lower limit part (26).

5. a kind of fast connecting joint according to any one of claim 1-4, is characterized in that, is respectively equipped with Sealing in described tool joint pin with on the wall contacted after female joint grafting, and closely pressing sealing, described Sealing is arranged on the below of steel ball.

6. a kind of fast connecting joint according to claim 5, it is characterized in that, described Sealing is seal ring (7), described seal ring (7) comprises the first seal ring (71) and the second seal ring (72), described first seal ring (71) is arranged on one of them wall of described tool joint pin and female joint, described second seal ring (72) is arranged on described tool joint pin and female joint another wall wherein, and described first seal ring (71) and the second seal ring (72) closely pressing seal.

7. a kind of fast connecting joint according to claim 5, it is characterized in that, described Sealing is the combination of seal ring (7) and sealing station (8), described seal ring (7) is arranged on one of them wall of described tool joint pin and female joint, described sealing station (8) is arranged on described tool joint pin and female joint another wall wherein, and described sealing station (8) and seal ring (7) closely pressing seal;

Wherein, the sealing projection (81) on the inwall that described sealing station (8) is the outer wall or female joint that are arranged at tool joint pin, the face that described sealing projection (81) contacts with seal ring is inclined-plane.

8. a kind of fast connecting joint according to any one of claim 1-4, is characterized in that, is provided with seal arrangement in the inside of described tool joint pin and the inside of female joint, and described seal arrangement is valve or the pushing tow structure of one-way flow;

Wherein, described pushing tow structure is produce relative displacement with the structure of interior media circulation passage after conducting or closedown tool joint pin and female joint grafting by mutual thrusting action.

9. a kind of fast connecting joint according to claim 8, it is characterized in that, described pushing tow structure is thimble component (9), described thimble component (9) is equipped with in described tool joint pin inside and female joint inside, the thimble component of described tool joint pin inside and the thimble component of described female joint inside are for being symmetrical arranged, and pushing tow contact;

Wherein, described thimble component (9) comprises and is fixed on the first fitting seat (91) and fixed plate (92) that tool joint pin is inner or female joint is inner, described first fitting seat is provided with the second elastic component (93), described second elastic component (93) is connected with thimble (94), described thimble (94) leans to be established on fixed plate jaggy (92), and breach described in shutoff (921);

Further, described first fitting seat is provided with the through hole for medium circulation.

10. a kind of fast connecting joint according to claim 8, it is characterized in that, described pushing tow structure is the combination of thimble component (9) and breakdown component (10), in one of them inside of tool joint pin and female joint, thimble component (81) is set, arrange breakdown component (10) in tool joint pin and female joint another inside wherein, described thimble component (9) contacts with described breakdown component (10) pushing tow;

Wherein, described breakdown component (10) is the second fitting seat (101), and described second fitting seat is provided with the through hole for medium circulation, and described second fitting seat (101) and thimble component (9) touching position are solid construction;

Or, described breakdown component (10) comprises the positioning seat (102) of solid construction, described positioning seat is provided with contact open device (103), described contact open device (103) contacts with thimble component (9) pushing tow, and described contact open device (103) is for make by the jacking force of thimble component and breakdown component the device producing the displacement that misplaces between contact open device and positioning seat.