CN214368424U - Fastening-releasing pipe joint - Google Patents

Abstract

The utility model discloses a fastening-releasing pipe joint, which comprises a fixing piece with a first central channel and a connecting piece with a second central channel, wherein the connecting piece is provided with a splicing position which is clamped with the fixing piece to communicate the first central channel and the second central channel and a releasing position which is separated from the fixing piece to interrupt the first central channel and the second central channel; the sealing valve comprises a valve core arranged in the fixing piece, and a first elastic structure which enables the valve core to have the trend of moving axially towards the connecting end of the connecting piece of the fixing piece along the first central channel and blocks the first central channel is arranged between the valve core and the fixing piece; the valve needle is fixedly arranged in the connecting piece, and in the connecting piece at the splicing position, the valve needle applies acting force for counteracting the axial movement trend to the valve core and opens the first central channel. The sealing valve is automatically closed after the connecting piece is removed, so that the leakage of gas in the container or the filling of external gas into the container can be avoided, and the input or output efficiency of the pipeline to the fluid is ensured.

Description

Fastening-releasing pipe joint

Technical Field

The utility model belongs to the technical field of the coupling, in particular to detain formula coupling of taking off.

Background

The quick hose connector is a connector which can realize the connection or disconnection of a pipeline without tools, and the quick connection and quick disconnection can be realized by the clamping and matching of a connecting piece sleeved on the hose and a fixing piece fixed at the inlet or the outlet of the pipeline.

For example, the chinese utility model patent with publication number CN208651899U discloses a quick hose coupling, which comprises a connecting piece and a fixing piece, wherein the connecting piece is provided with a buckle, the inner surface of the buckle is provided with an inverted buckle, the fixing piece is provided with a notch mutually matched with the buckle, and meanwhile, the surface of the fixing piece is also provided with uniformly distributed tangent planes; the periphery of the fixing piece is provided with a separating piece, the separating piece is formed by mutually splicing a part a and a part b, the part a and the part b respectively comprise an arc-shaped piece and a pressure-disengaging block, the pressure-disengaging block and the arc-shaped piece are connected and fixed through a connecting strip, and a gap is reserved between the connecting strip and the surface of the fixing piece; the inner surface of the arc-shaped part is provided with a clamping surface matched with the tangent plane, and the pressure-disengaging block corresponds to the notch.

The quick hose connector is characterized in that the fastener is buckled with the notch from the inner side of the connecting piece, so that the fixing piece and the connecting piece are spliced; the pressing-releasing block is adopted to extrude the buckle from the outer side of the connecting piece to enable the buckle to be separated from the notch, and therefore separation between the connecting piece and the fixing piece is achieved.

The existing hose connector has the following defects: the fixed part is fixedly connected with a container needing to input or output fluid, the other end of the hose is connected with an input source or an output downstream, when the connecting part is buckled with the fixed part, the pipeline is communicated, and when the connecting part is separated from the fixed part, the pipeline is interrupted; however, since the valve is not disposed on the fixing member, when the connecting member is separated from the fixing member, although the pipeline is interrupted, the container connected to the fixing member is not closed synchronously, and a sealing member needs to be additionally used after the pipeline is interrupted, and the container is not closed in time, which may cause fluid leakage or fluid refilling in the container, and ultimately affect the efficiency of the pipeline for inputting or outputting fluid.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a detain formula coupling, this detain formula coupling is in the pipeline interruption back, and the first central channel in the mounting that links to each other with the container also is in the closed condition, consequently can avoid gas leakage or outside gas to fill in the container completely, ensures the input or the output efficiency of pipeline to the fluid.

In order to realize the purpose of the utility model, the technical scheme of the utility model is as follows:

a buckling-releasing type pipe joint comprises a fixing piece with a first central channel and a connecting piece with a second central channel, wherein the connecting piece is provided with a splicing position which is clamped with the fixing piece to communicate the first central channel and the second central channel, and a releasing position which is separated from the fixing piece to interrupt the first central channel and the second central channel;

the buckling-releasing type pipe joint further comprises a sealing valve, the sealing valve comprises a valve core arranged in the fixing piece, and a first elastic structure which enables the valve core to have the trend of moving axially along the first central channel to the connecting end of the connecting piece of the fixing piece and block the first central channel is arranged between the valve core and the fixing piece; the connecting piece is internally and fixedly provided with a valve needle, and the valve needle applies acting force for counteracting the axial movement trend to the valve core and opens the first central channel in the connecting piece at the splicing position.

The buckling-releasing pipe joint of the utility model is also internally provided with the closing valve, when the connecting piece connected with the hose is separated from the fixing piece, the valve needle does not apply any acting force to the valve core, so that the valve core is driven by the first elastic structure to axially move towards the connecting end of the connecting piece of the fixing piece and block the first central channel, and the closing valve is in a closing state at the moment; when the connecting piece is clamped with the fixing piece, the valve needle in the connecting piece applies acting force for counteracting the axial movement trend to the valve core, so that the first central channel is opened, the closing valve is in an opening state at the moment, and the pipeline between the connecting piece and the fixing piece is communicated. The fastening-releasing pipe joint can completely avoid gas leakage in the container or external gas filling in the container, and ensure the efficiency of the pipeline for inputting or outputting fluid.

In the fastening pipe joint, the fixing part comprises a fastening head with a first central passage, a valve cover is fixedly arranged at the container connecting end of the fastening head, at least one first through hole for fluid to pass through is formed in the valve cover, a valve cavity communicated with the first central passage is formed between the valve cover and the fastening head, and the inner diameter of the valve cavity is larger than that of the first central passage;

the valve core comprises a valve rod penetrating through the valve cavity and the first central channel, the end part of the valve rod is fixedly provided with a plug positioned in the valve cavity, and the outer diameter of the plug is larger than the inner diameter of the first central channel.

When the valve rod slides towards the connecting end of the connecting piece of the buckling and releasing head along the first central channel under the driving of the first elastic structure, the plug also moves towards the connecting position of the valve cavity and the first central channel, and when the valve rod reaches the axial movement end point, the plug abuts against the opening of the first central channel towards the valve cavity to block the valve cavity and the first central channel, so that the first central channel is in a closed state.

When the closing valve is in an open state, fluid sequentially enters a container fixedly connected with the buckle-off head in a sealing manner through the first central passage, the valve cavity and the first through hole; or the fluid flows out from the container which is fixedly connected with the fixing piece in a sealing way through the first through hole, the valve cavity and the first central channel in sequence.

In the fastening-releasing pipe joint, an annular bulge is formed on the inner wall of the fastening-releasing head at the outer edge of an opening of the first central channel facing the valve cavity, an annular depressed area and an annular convex rib positioned on the inner ring and the outer ring of the annular depressed area are also formed on one side of the annular bulge facing the plug, and the plug is tightly attached to the annular bulge to enable the annular depressed area to be in a vacuum state so as to plug the first central channel;

one side of the plug facing the first central passage is also provided with a plunger part positioned on the periphery of the valve rod, and one end of the first central passage facing the valve cavity is provided with a flaring part matched with the plunger part.

In the above-mentioned pipe joint, the end of the valve rod away from the plug is provided with an anti-deviation structure for ensuring the valve rod to move on the axis of the first central channel, and the anti-deviation structure is also provided with a positioning sunken groove for accommodating the end part of the valve needle.

In the above fastening-releasing pipe joint, the first elastic structure includes a return spring, and two ends of the return spring are respectively abutted against the valve cover and the plug. The return spring can drive the plug and the valve rod to axially move.

In the buckling-releasing pipe joint, one side of the plug, which faces the valve cover, is provided with an axial positioning rod, the return spring is sleeved on the periphery of the axial positioning rod, and the valve cover is provided with a through hole for the end part of the axial positioning rod to pass through.

The reversing spring is sleeved on the periphery of the axial positioning rod, so that the reversing spring can be ensured to be axially deformed along the extending direction of the valve rod.

In the fastening-releasing pipe joint, the valve cover is provided with a first axial limiting channel, the plug is provided with a second axial limiting channel, and two ends of the return spring are respectively abutted against the bottom surfaces of the first axial limiting channel and the second axial limiting channel.

The axial limiting channel at the periphery of the return spring also plays the same role as the axial positioning rod, and the axial limiting channel and the axial positioning rod can be arranged at one of the axial limiting channel and the axial positioning rod or at the same time; when the axial positioning rod and the axial limiting channel are arranged at the same time, the axial positioning rod is located on the axis of the axial limiting channel.

In the above fastening-releasing pipe joint, the connecting member includes a pipe joint head having a second central passage, the head end of the fastening-releasing head is connected to the second central passage, and a fastening structure is provided between the fastening-releasing head and the pipe joint head;

the connector periphery have the knot of coaxial setting to take off the circle, should detain and take off and be equipped with between circle and the connector and make the knot take off the circle and have the second elastic construction towards the fixed part connecting end axial displacement trend of connector in order to order about this block structure will detain the head and fix in second central passage.

When the buckling and releasing ring is used, acting force for overcoming the axial movement trend is applied to the buckling and releasing ring firstly, so that the clamping structure is in a loose state, and the buckling and releasing head can conveniently enter the second central channel; when the buckle is off the head and installed in place, the buckle is released and is off the circle, the buckle is off the circle and is driven by the second elastic structure to move axially towards the fixing piece connecting end of the connector and extrude the clamping structure, and the clamping structure is about to buckle off the head and lock in the second central passage to complete the splicing of the connecting piece and the fixing piece.

In the above fastening-releasing pipe joint, the fastening structure comprises at least two movable holes uniformly arranged on the pipe joint in the circumferential direction, balls are movably arranged in each movable hole, and the outer edge of the opening of each movable hole is provided with a side lip which enables the balls to be partially exposed on the side of the second central channel but not fall into the second central channel;

the periphery of the buckling head is provided with a buckling groove, and the buckling ring is driven by the second elastic structure to extrude the ball so as to enable the ball to be partially embedded into the buckling groove;

the outer periphery of the buckling and releasing head is also provided with a sealing ring matched with the inner peripheral wall of the second central channel, the end part of the connector is provided with a clamping ring used for limiting the axial movement end position of the buckling and releasing ring, and the clamping ring and the sealing ring are respectively positioned at two sides of the buckling and releasing groove when the connecting piece and the fixing piece are positioned at the splicing position.

Each ball is movably arranged in the corresponding movable hole, each movable hole is respectively opened on the inner peripheral wall and the outer peripheral wall of the pipe joint, but because the outer edge of the opening of each movable hole is provided with the edge lip on the inner peripheral wall side of the pipe joint, the ball can only be partially exposed in the second central channel but can not fall into the second central channel; and in the peripheral wall side of connector, the ball can freely come in and go out the activity hole, provides great activity space for the ball, can not influence the knot and take off in the first access second central passage.

When the buckling and releasing ring axially moves towards the hose connecting end of the connector under the action of external force, the buckling and releasing ring does not extrude the ball, the ball can freely move, and the buckling and releasing head can be easily connected into the second central passage and partially exposed in the second central passage and can also be retracted into the movable hole under the extrusion of the buckling and releasing head at the moment); when the snap ring is driven by the second elastic structure to move axially towards the fixed part connecting end of the connector, the snap ring presses the ball from the outer periphery of the connector to expose part of the ball in the second central channel and to be embedded into the snap groove on the snap ring.

In the above fastening pipe joint, a support is fixedly arranged in the second central passage, at least two second through holes for fluid to pass through are formed in the support, and the valve needle is fixedly arranged on the support.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

(1) the buckling-releasing pipe joint of the utility model is also internally provided with the closing valve, when the connecting piece connected with the hose is separated from the fixing piece, the valve needle does not apply any acting force to the valve core, so that the valve core is driven by the first elastic structure to axially move towards the connecting end of the connecting piece of the fixing piece and block the first central channel, and the closing valve is in a closing state at the moment; when the connecting piece is clamped with the fixing piece, the valve needle in the connecting piece applies acting force for counteracting the axial movement trend to the valve core, so that the first central channel is opened, the closing valve is in an opening state at the moment, and the pipeline between the connecting piece and the fixing piece is communicated. The fastening-releasing pipe joint can completely avoid gas leakage in the container or external gas filling in the container, and ensure the efficiency of the pipeline for inputting or outputting fluid.

(2) The utility model discloses in, the mounting is including being formed with the knot of valve pocket and first central passage and taking off the head, detain the case of taking off in the head and include the valve rod in valve pocket and the first central passage, the tip of valve rod has set firmly the end cap that is in the valve pocket, the internal diameter of this valve pocket, the external diameter of end cap and the internal diameter of first central passage diminish in proper order, consequently when the case takes place axial displacement in taking off the head, the intercommunication department that first central passage and valve pocket can be opened or closed to the end cap, realize opening or closing of sealing valve.

(3) The utility model discloses in, it is protruding to be formed with the annular that can closely laminate with the end cap on the inner wall of head is taken off in the knot to this annular is protruding still to be formed with annular depressed area and be in the annular bead of the interior outer loop of annular depressed area towards one side of end cap, and when the end cap closely laminated with annular is protruding, thereby annular depressed area is in the first central channel of shutoff effectively in vacuum state.

(4) In the utility model, the first elastic structure comprises a return spring, and two ends of the return spring are respectively abutted against the valve cover and the plug; and one side of the plug, which faces the valve cover, is provided with an axial positioning rod at the center of the return spring, and the return spring is sleeved on the periphery of the axial positioning rod to ensure that the return spring is axially deformed along the extending direction of the valve rod.

(5) In the utility model, a first axial limiting channel is formed on the valve cover, a second axial limiting channel is formed on the plug, and two ends of the return spring are respectively abutted against the bottom surfaces of the first axial limiting channel and the second axial limiting channel; the first axial limiting channel and the second axial limiting channel also play the same role as the axial positioning rod, and the first axial limiting channel and the second axial limiting channel can be arranged only one of the axial positioning rod and the axial positioning rod or can be arranged at the same time; when the axial positioning rod, the first axial limiting channel and the second axial limiting channel are arranged at the same time, the axial positioning rod is located on the axis of the first axial limiting channel and the axis of the second axial limiting channel.

(6) The utility model discloses in, adopt the ball to take off the groove with the knot and realize that coupling and knot take off the block and the separation of head, not only the structure is more simple, and life is longer, and coupling and knot take off the head moreover can block, splice more closely.

Drawings

Fig. 1 is a schematic structural view of the fastening-releasing type pipe joint of the present invention;

FIG. 2 is a schematic view of the buckle-release head of FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of the valve cover of FIG. 1 from another perspective;

FIG. 5 is a partial cross-sectional view of the valve cartridge of FIG. 1;

FIG. 6 is a schematic view of the valve cartridge of FIG. 5 from a second perspective;

FIG. 7 is a schematic view of the valve cartridge of FIG. 5 from a third perspective;

FIG. 8 is a schematic view of the connector of FIG. 1;

FIG. 9 is an enlarged view of portion B of FIG. 8;

FIG. 10 is a schematic view of the connector shown in FIG. 8 from another perspective.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Example 1

As shown in fig. 1, the fastening-releasing type pipe joint of the present embodiment includes a fastening-releasing type pipe joint including a fastening member 1 connected to a container and a connection member 2 connected to a hose, a closing valve 6, and the fastening member 1 and the connection member 2 may be separated from or engaged with each other to interrupt or communicate a pipeline.

As shown in fig. 2 and seen in fig. 1, in this embodiment, the fixing member 1 includes a fastening head 11 having a first central channel 12, and at the container connecting end 11a of the fastening head 11, an annular flap 13 is provided on the outer periphery of the fastening head 11, and the fastening head 11 and the container can be fixed by sealing the annular flap 13 with the container.

As shown in fig. 8 and seen in fig. 1, in this embodiment, the connector 2 includes a connector head 21 having a second central passage 22, the connector connecting end 11b of the fastening and releasing head 11 is inserted into the second central passage 22, and the hose connecting end 21a of the connector head 21 is connected with the hose 4 by the hose sleeve 3 in a sealing manner. The fastening structure 5 is disposed between the fastening and releasing head 11 and the connector 21, the outer periphery of the connector 21 is provided with a fastening and releasing ring 23 coaxially disposed, and a second elastic structure 24 is disposed between the fastening and releasing ring 23 and the connector 21 for making the fastening and releasing ring 23 have a tendency to move axially toward the fastening member connecting end 21b of the connector 21 so as to drive the fastening structure 5 to fix the fastening and releasing head 11 in the second central passage 22.

As shown in fig. 8 and 9 and seen in fig. 1, the engaging structure 5 includes at least two movable holes 51 (four movable holes are provided in the present embodiment) uniformly provided on the connector 21 in the circumferential direction, each movable hole 51 is opened on the inner circumferential wall and the outer circumferential wall of the connector 21, and a ball 52 is movably provided in each movable hole 51; in this embodiment, since the outer edge of the opening of the movable hole 51 is provided with the side lip 53 on the inner peripheral wall side of the connector 21, the ball 52 is only partially exposed in the second central passage 22 (in this embodiment, one third of the ball 52 is exposed in the second central passage 22), but does not fall into the second central passage 22; on the outer peripheral wall side of the nipple 21, the balls 52 can freely move into and out of the movable holes 51, providing a large movable space for the balls 52 without affecting the insertion of the locking and unlocking head 11 into the second central passage 22.

When the retainer 23 is axially moved toward the hose connection end 21a of the connector 21 by an external force, the retainer 23 does not press the balls 52, the balls 52 are freely movable, and the locking head 11 can be easily inserted into the second central passage 22 (even though the balls 52 are partially exposed in the second central passage 22, they are retracted into the movable holes 51 by the pressing of the locking head 11); when the snap ring 23 is axially moved toward the fastening member connection end 21b of the nipple 21 by the urging of the second elastic structure 24, the snap ring 23 presses the ball 52 from the outer peripheral side of the nipple 21 to partially expose the second central passage 22 and engage with the snap groove 54 of the snap head 11, thereby achieving the snap-fit engagement between the snap head 11 and the nipple 21.

As shown in fig. 1, the second elastic structure 24 of the present embodiment is a fastening and releasing spring 24a, the fastening and releasing spring 24a is sleeved on the outer periphery of the connector 21, and two ends of the fastening and releasing spring 24a are respectively abutted against the connector 21 and the fastening and releasing ring 23.

As shown in fig. 1 and seen in fig. 2 and 8, a first annular groove 11c is further formed in the periphery of the fastening and unfastening head 11, a sealing ring 14 is embedded in the first annular groove 11c, and the sealing ring 14 can improve the connection sealing property between the fastening and unfastening head 11 and the pipe joint 21; a second annular groove 21c is formed in the end of the nipple 21, a snap ring 25 is embedded in the second annular groove 21c, and the snap ring 25 can limit the axial movement end point position of the fastening and releasing ring 23; when the locking and releasing head 11 and the pipe joint 21 are coupled to each other, the locking ring 25 and the sealing ring 14 are disposed at both sides of the locking and releasing groove 54, respectively.

As shown in fig. 1, a closing valve 6 is further provided in the fastening-releasing type pipe joint of the present embodiment, and when the fixing member 1 and the connecting member 2 are separated from each other, the closing valve 6 is synchronously closed, not only the pipeline is interrupted, but also the container is in a closed state; when the fixing piece 1 and the connecting piece 2 are mutually clamped and spliced, the closing valve 6 is synchronously opened, so that the container is communicated with the outside.

In this embodiment, the sealing valve 6 includes a valve cap 63, the valve cap 63 is sealingly mounted on the container connecting end 11a of the fastening head 11, the fastening head 11 serves as a valve body, a valve cavity 64 communicated with the first central passage 12 is formed between the valve cap 63 and the fastening head 11, and as shown in fig. 4, at least one first through hole 63a (four in this embodiment) for fluid to pass through is formed in the valve cap 63; as shown in fig. 5 and seen in fig. 1, a valve core 61 is movably mounted in the fastening head 11, and a first elastic structure 65 is disposed between the valve core 61 and the fixing member 1 to make the valve core 61 have a tendency to move axially along the first central passage 12 toward the connecting member connecting end 11b of the fixing member 1 and block the first central passage 12.

As shown in fig. 5 and seen in fig. 1, the valve core 61 includes a valve rod 61a penetrating through the valve cavity 64 and the first central passage 12, a plug 61b is fixedly disposed at an end of the valve rod 61a and located in the valve cavity 64, an inner diameter of the valve cavity 64 is larger than an inner diameter of the first central passage 12, an outer diameter of the plug 61b is larger than an inner diameter of the first central passage 12, and the closing valve 6 changes an opening and closing state at a communication position between the valve cavity 64 and the first central passage 12.

As shown in fig. 3 and 5, and as seen in fig. 1 and 2, an annular protrusion 11d is formed on the inner wall of the locking head 11 at the outer edge of the opening of the first central passage 12 facing the valve chamber 64, and when the plug 61b and the locking head 11 interfere with each other, the annular protrusion 11d can ensure that fluid does not flow out from the gap between the plug 61b and the locking head 11; furthermore, an annular concave area 11e and an annular convex rib 11f located inside and outside the annular concave area 11e are formed on the top surface of the annular protrusion 11d, when the plug 61b and the buckling head 11 are abutted against each other, the annular convex rib 11f is tightly attached to the plug 61b, and the annular concave area 11e forms a vacuum area, so that the sealing performance when the plug 61b plugs the first central passage 12 is further improved. Meanwhile, the plug 61b is provided with a plunger portion 61c on the side facing the first central passage 12, a flared portion 12a adapted to the plunger portion 61c is formed on the end of the first central passage 12 facing the valve chamber 64, and the mutual engagement between the flared portion 12a and the plunger portion 61c further improves the sealing property when the plug 61b plugs the first central passage 12.

When the valve rod 61a slides along the first central passage 12 toward the connecting end 11b of the connecting member of the fastening head 11 under the driving of the first elastic structure 65, the plug 61b also moves toward the connecting position of the valve cavity 64 and the first central passage 12, and when the valve rod 61a reaches the end point of axial movement, the plug 61b abuts against the opening of the first central passage 12 facing the valve cavity 64, so as to block the valve cavity 64 and the first central passage 12, and make the first central passage 12 in a closed state.

When the closing valve 6 is in an open state, fluid enters a container fixedly connected with the buckling head 11 in a sealing manner through the first central passage 12, the valve cavity 64 and the first through hole 63a in sequence; or the fluid flows out from the container sealingly secured to the fixture 1 through the first through-hole 63a, the valve chamber 64 and the first central passage 12 in that order.

As shown in fig. 4 and 5, as seen in combination with fig. 1, the first elastic structure 65 includes a return spring 65a, and both ends of the return spring 65a are respectively abutted against the valve cover 63 and the plug 61 b; the axial positioning rod 61d is provided on the side of the plug 61b facing the valve cover 63, the return spring 65a is fitted around the outer periphery of the axial positioning rod 61d, and a through hole 63b for allowing the end of the axial positioning rod 61d to pass therethrough is formed in the valve cover 63. Meanwhile, a first axial limiting channel 63c is formed on the valve cover 63, a second axial limiting channel 61e is formed on the plug 61b, the axial positioning rod 61d is located on the axis of the second axial limiting channel 61e, and two ends of the return spring 65a are respectively abutted against the bottom surfaces of the first axial limiting channel 63c and the second axial limiting channel 61 e. The axial positioning rod 61d, the first axial limiting channel 63c and the second axial limiting channel 61e are all arranged to ensure that the return spring 65a is axially deformed along the extending direction of the valve rod 61a without lateral twisting.

As shown in fig. 5 and 7, in order to ensure the strength of the plug 61b, a plurality of reinforcing ribs 61f are provided on the side of the plug 61b facing the valve cover 63, and the reinforcing ribs 61f are uniformly distributed on the plug 61b in a radial manner around the second axial limiting channel 61 e.

As shown in fig. 1, the valve core 61 which blocks the first central passage 12 under the driving of the first elastic structure 65 is pushed by the valve needle 62 to release the blocking effect on the first central passage 12. As shown in fig. 8 and 10, a bracket 66 is fixedly installed in the second central passage 22 of the connector 21, the bracket 66 of this embodiment is formed with at least two second through holes 66a for fluid to pass through, and the bracket 66 is formed in a cross shape, so that four second through holes 66a are formed, and the valve needle 62 is fixedly installed on the bracket 66.

As shown in fig. 5 and 7, the end of the valve rod 61a away from the plug 61b is provided with a deviation preventing structure 61g for ensuring the valve rod 61a to move on the axis of the first central passage 12, wherein the deviation preventing structure 61g is a cross, and the center of the cross is further formed with a positioning sink 61h for accommodating the end of the valve needle 62.

The working principle of the buckling-tripping type pipe joint of the embodiment is as follows:

the fixing piece 1 is fixedly arranged on the container through the annular wing piece 13, and the connecting piece 2 is fixedly arranged on the end part of the hose through the hose section sleeve 3;

when the fixed part 1 and the connecting part 2 are separated from each other, the valve core 61 in the fixed part 1 is driven by the first elastic structure 65 to block the opening of the first central passage 12, the valve cavity 64 and the first central passage 12 are blocked, and at the moment, the closing valve 6 is in a closed state, and gas can not enter or exit the container; the buckling ring 23 on the connecting piece 2 is pressed against the snap ring 25 under the driving of the second elastic structure 24, and the ball 52 is limited in the movable hole 51;

when the connecting piece 2 is spliced with the fixing piece 1, acting force is applied to the buckling and releasing ring 23 to enable the buckling and releasing ring to move away from the clamping ring 25 in the axial direction, and the limitation of the buckling and releasing ring on the ball 52 is released; at this time, the buckling head 11 is placed into the second central channel 22, the valve needle 62 is placed into the positioning sinking groove 61h along with the positioning sinking groove and pushes the valve rod 61a, the plugging of the opening of the first central channel 12 is gradually released by the plug 61b under the driving of the valve needle 62, when the buckling head 11 is completely placed into the second central channel 22, the plugging function of the plug 61b is also completely released, and the closing valve 6 is in an open state; at this time, the locking and releasing ring 23 is released, the locking and releasing ring 23 is driven by the second elastic structure 24 to move axially towards the snap ring 25 and press the ball 52 to be embedded into the locking and releasing groove 54, and the locking and releasing head 11 is locked.

When being applied to the hospital to disinfect bed clothes and the like with the knot formula coupling of taking off of this embodiment, link to each other the hose with the input/output equipment who has the function of bleeding simultaneously and filling ozone, with mounting 1 fixed mounting on the sealing bag that is used for splendid attire bed clothes. When the ozone generator is used, the connecting piece 2 is spliced to the fixing piece 1, air in the sealing bag is pumped out, then ozone is filled into the sealing bag, after the ozone filling is completed, the connecting piece 2 is directly dismounted, the closing valve 6 in the fixing piece 1 is automatically closed, ozone leakage is prevented, and air is prevented from being refilled into the sealing bag.

Claims (10)

1. A snap-off pipe joint comprises a fixing member (1) having a first central passage (12) and a connecting member (2) having a second central passage (22), the connecting member (2) having a splicing position where it is engaged with the fixing member (1) to communicate the first central passage (12) with the second central passage (22), and a disengagement position where it is separated from the fixing member (1) to interrupt the first central passage (12) and the second central passage (22);

the device is characterized by further comprising a closing valve (6), wherein the closing valve (6) comprises a valve core (61) arranged in the fixing piece (1), and a first elastic structure (65) which enables the valve core (61) to have the trend of moving axially along the first central channel (12) to the connecting piece connecting end (11b) of the fixing piece (1) and blocks the first central channel (12) is arranged between the valve core (61) and the fixing piece (1); a valve needle (62) is fixedly arranged in the connecting piece (2), and in the connecting piece (2) at the splicing position, the valve needle (62) applies acting force for counteracting the axial movement trend to the valve core (61) and opens the first central channel (12).

2. The pipe joint according to claim 1, wherein the fixing member (1) comprises a fastening head (11) having a first central passage (12), a valve cover (63) is fixed to a container connecting end (11a) of the fastening head (11), at least one first through hole (63a) for fluid to pass through is formed in the valve cover (63), a valve cavity (64) communicating with the first central passage (12) is formed between the valve cover (63) and the fastening head (11), and an inner diameter of the valve cavity (64) is larger than an inner diameter of the first central passage (12);

the valve core (61) comprises a valve rod (61a) penetrating through the valve cavity (64) and the first central passage (12), a plug (61b) positioned in the valve cavity (64) is fixedly arranged at the end part of the valve rod (61a), and the outer diameter of the plug (61b) is larger than the inner diameter of the first central passage (12).

3. The pipe joint according to claim 2, wherein an annular protrusion (11d) is formed on the inner wall of the fastening head (11) at the outer edge of the opening of the first central passage (12) facing the valve chamber (64), an annular recessed area (11e) and an annular rib (11f) at the inner and outer rings of the annular recessed area (11e) are further formed on the annular protrusion (11d) at the side facing the plug (61b), and the plug (61b) is tightly attached to the annular protrusion (11d) to make the annular recessed area (11e) in a vacuum state so as to block the first central passage (12);

the side of the plug (61b) facing the first central channel (12) is also provided with a plunger part (61c) positioned on the periphery of the valve rod (61a), and one end of the first central channel (12) facing the valve cavity (64) is provided with a flaring part (12a) matched with the plunger part (61 c).

4. The pipe joint according to claim 2 or 3, wherein the end of the stem (61a) remote from the plug (61b) is provided with an anti-deviation structure (61g) for ensuring the movement of the stem (61a) on the axis of the first central passage (12), and the anti-deviation structure (61g) is further formed with a positioning depression (61h) for receiving the end of the valve needle (62).

5. The pipe joint according to claim 2 or 3, wherein the first elastic structure (65) comprises a return spring (65a), the two ends of the return spring (65a) are respectively abutted against the valve cover (63) and the plug (61 b).

6. The pipe joint according to claim 5, wherein the plug (61b) has an axial positioning rod (61d) on a side facing the valve cover (63), the return spring (65a) is sleeved on the outer periphery of the axial positioning rod (61d), and the valve cover (63) is provided with a through hole (63b) for the end of the axial positioning rod (61d) to pass through.

7. The pipe joint according to claim 5, wherein the valve cover (63) is formed with a first axial limiting passage (63c), the choke plug (61b) is formed with a second axial limiting passage (61e), and both ends of the return spring (65a) are respectively abutted against the bottom surfaces of the first axial limiting passage (63c) and the second axial limiting passage (61 e).

8. The pipe joint according to claim 2 or 3, wherein the connecting element (2) comprises a joint head (21) having a second central passage (22), the head end of the fastening and releasing head (11) is inserted into the second central passage (22), and a clamping structure (5) is arranged between the fastening and releasing head (11) and the joint head (21);

the outer periphery of the connector (21) is provided with a buckle-trip ring (23) which is coaxially arranged, and a second elastic structure (24) which enables the buckle-trip ring (23) to have the trend of moving towards the fixing piece connecting end (21b) of the connector (21) in the axial direction so as to drive the clamping structure (5) to fix the buckle-trip head (11) in the second central channel (22) is arranged between the buckle-trip ring (23) and the connector (21).

9. The pipe joint according to claim 8, wherein the engaging structure (5) comprises at least two moving holes (51) uniformly arranged in the circumferential direction of the pipe joint (21), each moving hole (51) being movably provided with a ball (52), the outer edge of the opening of the moving hole (51) having a lip (53) for partially exposing the ball (52) to the side of the second central passage (22) but not falling into the second central passage (22);

the periphery of the buckling head (11) is provided with a buckling groove (54), and the buckling ring (23) is driven by the second elastic structure (24) to press the ball (52) so that the ball (52) is partially embedded into the buckling groove (54);

detain and take off head (11) periphery still have with sealing washer (14) of second central channel (22) inner peripheral wall adaptation, the tip of nipple (21) have and be used for restricting to detain snap ring (25) of taking off circle (23) axial displacement terminal position, when connecting piece (2) and mounting (1) are in the concatenation position snap ring (25) and sealing washer (14) be in respectively and detain the both sides that take off groove (54).

10. The pipe joint according to claim 8, wherein a bracket (66) is fixedly installed in the second central passage (22), at least two second through holes (66a) for fluid to pass through are formed in the bracket (66), and the valve needle (62) is fixedly installed on the bracket (66).

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