CN212131662U - Concave ring type detachable quick-plug connecting device - Google Patents

Abstract

The utility model discloses a concave ring type detachable quick-plug connecting device, which comprises a pipeline and a connecting assembly, wherein the connecting assembly comprises a connecting pipe and a pipe limiting assembly, and the inner wall of the connecting pipe is provided with a pipeline stopping section, a pipeline socket section, a sealing ring mounting section and an anti-drop ring mounting section; a first annular groove is formed in the anti-drop ring mounting section; the pipe limiting assembly comprises a push ring, a backstop spring gear ring, a sealing clamp ring and a sealing ring, wherein an anti-falling boss is formed by protruding the push ring, and a contraction groove is formed in the push ring; the sealing ring is arranged in the sealing ring mounting section, one end of the push ring is inserted into the connecting pipe, and the anti-falling boss is inserted into the first annular groove; the end of the pipeline penetrates through the pipe limiting assembly and then is inserted into the pipe socket section, and an annular space is formed between the push ring and the pipeline. The utility model has the advantages of convenient installation and operation, short time consumption of installation work, high working efficiency and capability of performing pipeline connection without professional personnel and execution tools; meanwhile, in the whole pipeline connection process, no deformation phenomenon of the pipe fitting exists, and the sealing effect is good.

Description

Concave ring type detachable quick-plug connecting device

Technical Field

The utility model relates to a pipe connection technical field, concretely relates to detachable quick-plug connecting device of concave ring formula.

Background

The connecting method of the pipelines generally comprises welding connection, clamping connection, bolt connection and the like. The conventional large pipeline connection modes have the following defects:

1. welding type connection mode

The welding construction is troublesome, the chromium-poor phenomenon easily occurs when the temperature of the welding part is high, and the solid solution treatment cannot be carried out on the spot, so that the welding part is easy to rust;

2. clamping/ring pressing connection structure

The clamping/ring pressing connection is generally that one end of one pipeline is flared, then the end of the other pipeline is inserted into the flared end, and then the clamping and pressing treatment is carried out on the insertion superposition position of the two pipelines, the existing clamping and pressing connection structure is difficult to ensure the deformation synchronization of the two pipelines, gaps are easy to appear at the clamping and pressing connection position, the connection quality is poor, so that the tightness of the two pipelines on the whole circumference is difficult to ensure, and the leakage condition is easy to appear when the tightness is poor;

3. screw connection

The threaded connection is inconvenient to operate in a reciprocating mode, a sufficient rotation space is needed during connection, and the threaded connection cannot be rotated and fastened during narrow space or corner pipe distribution.

In the existing traditional pipeline connecting structures, the installation operation is inconvenient, the time consumption of the installation operation is long, the working efficiency is influenced, the pipeline in the pipeline connection is disposable in quick insertion connection, welding and clamping connection, if the pipeline is changed and the connection is defective in the pipeline installation, a pipe fitting or a pipeline must be cut off, and the pipeline is constructed again, so that great waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides a detachable quick-plug connecting device of concave ring formula has solved among the current pipeline connection structure, not only installation operation is inconvenient, installation work consumes long time, influence work efficiency, and the leakproofness is poor, the above-mentioned technical problem of maintenance cost height.

The utility model adopts the technical scheme as follows:

a concave ring type detachable quick-plug connecting device comprises two pipelines and a connecting assembly for fixedly connecting the two pipelines, wherein the connecting assembly comprises a connecting pipe and a pipe limiting assembly, a pipeline stopping section, a pipeline socket section, a sealing ring mounting section and a drop-proof ring mounting section are sequentially arranged on the inner wall of the connecting pipe from the middle part to two ends, the inner diameters of the pipeline stopping section, the pipeline socket section and the sealing ring mounting section are sequentially increased, and the inner diameter of the drop-proof ring mounting section is not less than that of the sealing ring mounting section;

the anti-drop ring mounting section is provided with a first annular groove of which the axis is superposed with the axis of the connecting pipe;

the two pipe limiting assemblies are respectively positioned at two ends of the connecting pipe, each pipe limiting assembly comprises a push ring, a stopping spring gear ring, a sealing compression ring and a sealing ring, the axes of the push rings and the stopping spring gear ring are overlapped with the axis of the connecting pipe, and the push rings, the stopping spring gear ring, the sealing compression ring and the sealing ring are sequentially and axially compressed, the stopping spring gear ring is conical, and the small-diameter end of the stopping spring gear ring faces the sealing compression; the anti-falling boss is convexly formed on the circumferential side wall of the push ring along the circumference of the circumferential side wall, a contraction groove is arranged on one side of the circumferential side wall of the push ring, one end of the contraction groove is communicated with the end part of the push ring, and the groove bottom of the contraction groove is communicated with an inner hole of the push ring;

the sealing ring is arranged in the sealing ring mounting section, one end of the push ring, which is communicated with the shrinkage groove, is inserted into the connecting pipe and is inserted into an inner hole of the stopping spring gear ring, the sealing clamp ring and the sealing ring are axially pressed by the push ring, and the anti-falling boss is inserted into the first annular groove;

the end parts of the pipeline respectively penetrate through a pipe limiting component and then are inserted into the pipe socket joint section, the inner ring and the outer ring of the sealing ring are in interference fit with the pipeline and the sealing ring installation section respectively, meanwhile, the small-diameter end of the inner ring of the retaining spring gear ring is in interference fit with the pipeline, and an annular space is formed between one end, at least close to the retaining spring gear ring, of the inner ring of the push ring and the outer wall of the pipeline.

Furthermore, the inner ring of the push ring comprises a shrinkage hole and a matching hole, an annular space is formed between the shrinkage hole and the pipeline, the matching hole is in transition fit with the pipeline, and the bottom of the shrinkage groove is communicated with the shrinkage hole.

Furthermore, the shrinkage hole is a tapered hole, and the small-diameter end of the shrinkage hole is connected with the matching hole.

Furthermore, the retaining spring gear ring is made of an elastic ring body, N inner through grooves and N outer through grooves are formed in the inner ring and the outer ring of the elastic ring body respectively, the axes of the inner through grooves and the outer through grooves are parallel to the axis of the elastic ring body, and the inner through grooves and the outer through grooves are distributed in a staggered mode in sequence.

Furthermore, the inner diameter and the outer diameter of the retaining spring gear ring are gradually increased along with the distance from the sealing ring, and one end, inserted into the connecting pipe, of the push ring is inserted into the inner ring of the retaining spring gear ring.

Furthermore, one end of the push ring, which is inserted into the connecting pipe, is provided with a contact inclined surface, and the contact inclined surface is in contact with the inner wall of the retaining spring gear ring.

Furthermore, a second annular groove is formed in the anti-falling ring installation section and located on one side, close to the sealing ring installation section, of the first annular groove, and one end, far away from the sealing ring, of the retaining spring gear ring is inserted into the second annular groove.

Furthermore, the anti-drop ring installation section is provided with a third annular groove on one side, close to the sealing ring installation section, of the second annular groove, the anti-drop ring installation section pushes the push ring to the sealing ring, the retaining spring gear ring and the sealing pressing ring can be moved towards the sealing ring, the anti-drop boss is inserted into the second annular groove, one end, far away from the sealing ring, of the retaining spring gear ring is inserted into the third annular groove, and the sealing ring is axially compressed

Furthermore, one side of the inner hole of the sealing compression ring, which is close to the retaining spring gear ring, is provided with a tapered hole, the large-diameter end of the tapered hole faces the retaining spring gear ring, and the small-diameter end of the retaining spring gear ring is inserted into the tapered hole.

Further, the external diameter that pushes away the circle includes major diameter section and path section, anticreep boss and shrink groove all set up on the path section.

Furthermore, one side of the anti-falling boss close to the small-diameter end of the pushing ring is connected with the outer wall of the pushing ring through a conical surface, the large-diameter end of the conical surface is connected with the middle part of the side wall of the anti-falling boss, and the small-diameter end of the conical surface is connected with the outer wall of the pushing ring.

Further, a transition section is arranged between the large-diameter section and the small-diameter section of the anti-falling boss, the transition section is conical, an oblique angle chamfer is arranged at the end part of the inner hole of the connecting pipe, and the oblique angle chamfer is in contact with the transition section.

Further, the sealing ring is an O-shaped sealing ring.

Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:

1. the utility model relates to a concave ring type detachable quick-plug connecting device, which is convenient to install and operate, short in installation time consumption and high in working efficiency, and can be used for pipeline connection without professional staff and execution tools; the connecting structure can be detached from the pipeline, if the pipeline is changed and the connection is defective or the pipeline is changed during the installation of the pipeline, the pipeline can be pulled out, and related parts can be replaced or maintained without cutting off and re-constructing the pipe fittings or the pipeline, so that the maintenance cost is reduced, the auxiliary operation of the pipeline is convenient to install and construct, particularly temporarily; meanwhile, the pipeline is extremely convenient to disassemble, and the pipeline can be disassembled by pushing the push ring; meanwhile, in the whole pipeline connection process, no deformation phenomenon of the pipe fitting exists, and the sealing effect is good;

2. the utility model relates to a detachable quick-plug connecting device of concave ring formula, the outer circular conical surface of stopping spring ring gear contacts with the bell mouth pore wall, has increased the contact surface between sealed clamp ring and the stopping spring ring gear, promotes the stability of pipeline connection;

3. the utility model relates to a detachable quick-plug connecting device of concave ring formula, when its major diameter section contacts with the takeover when promoting to push away the circle, the anticreep boss just inserts first ring channel to whether the installer judges the anticreep boss promotes to target in place through looking over the position that outside promoted to push away the circle;

4. the utility model relates to a detachable quick-plug connecting device of concave ring formula, the one side that is close to the minor diameter end of pushing away the circle on the anticreep boss is connected with the outer wall of pushing away the circle through the conical surface to when inserting pushing away the circle in the takeover, when the anticreep boss is in the takeover contact, its resistance based on between anticreep boss and the takeover is the slow increase, so that the workman inserts the pushing away circle in the takeover through extrusion anticreep boss, so that the anticreep boss inserts the first ring channel smoothly;

5. the utility model relates to a detachable quick-plug connecting device of concave ring formula is through setting up the third ring channel to back in the pipe insertion is taken over, through the further axial of the spacing subassembly of geminate transistors compress tightly, not only promoted the utility model discloses a sealing performance has promoted the stability of pipe connection simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts, and the proportional relationship of each component in the drawings in the present specification does not represent the proportional relationship in the actual material selection design, and is only a schematic diagram of the structure or the position, in which:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is an exploded view of the present invention;

FIG. 4 is a schematic structural view of the adapter tube;

FIG. 5 is a schematic view of the fitting of the adapter tube and tube retainer assembly;

FIG. 6 is a schematic structural view of a push ring;

FIG. 7 is a cross-sectional view of the push ring;

FIG. 8 is a schematic view of the construction of a retaining spring ring gear;

FIG. 9 is a schematic structural view of embodiment 3;

FIG. 10 is a schematic view showing a structure of the embodiment 3 after the pipe is locked;

fig. 11 is a schematic structural view of the adapter of embodiment 3.

Reference numerals in the drawings indicate:

1-pipeline, 2-push ring, 201-anti-drop boss, 202-contact inclined plane, 203-shrinkage groove, 204-shrinkage hole and 205-matching hole;

3-retaining spring gear ring, 301-inner through groove, 302-outer through groove;

4-sealing a compression ring and 5-sealing a ring;

6-connecting pipe, 601-first annular groove, 602-second annular groove, 603-connecting pipe transition section, 604-sealing ring installation section, 605-pipeline socket section, 606-pipeline stopping section, 607-third annular groove and 7-annular space.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

The term "connected" as used herein is intended to mean a conventional connection, such as integrally formed, welded, riveted, etc., if not specifically emphasized, and the specific connection is preferably adapted according to conventional technical knowledge in the art. All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 11.

Example 1

As shown in fig. 1 to 8, a female ring type detachable quick-plug connection device comprises two pipelines 1 and a connection assembly for fixedly connecting the two pipelines 1, wherein the connection assembly comprises a connection pipe 6 and a pipe limiting assembly, a pipeline stopping section 606, a pipeline socket section 605, a sealing ring installation section 604 and a drop-proof ring installation section are sequentially arranged on the inner wall of the connection pipe 6 from the middle part to two ends, the inner diameters of the pipeline stopping section 606, the pipeline socket section 605 and the sealing ring installation section 604 are sequentially increased, and the inner diameter of the drop-proof ring installation section is not less than that of the sealing ring installation section 604;

a first annular groove 601 with the axis coincident with the axis of the connecting pipe 6 is arranged at the anti-drop ring mounting section;

the two pipe limiting assemblies are respectively positioned at two ends of the connecting pipe 6, each pipe limiting assembly comprises a push ring 2, a stop spring gear ring 3, a sealing compression ring 4 and a sealing ring 5, the axes of the push ring 2, the stop spring gear ring 3, the sealing compression ring 4 and the sealing ring 5 are all overlapped with the axis of the connecting pipe 6 and are sequentially and axially compressed, the stop spring gear ring 3 is conical, and the small-diameter end of the stop spring gear ring faces the sealing compression ring 4; the anti-falling boss 201 is convexly formed on the circumferential side wall of the push ring 2 along the circumference of the circumferential side wall, a contraction groove 203 is formed in one side of the circumferential side wall of the push ring 2, one end of the contraction groove 203 is communicated with the end part of the push ring 2, and the groove bottom of the contraction groove is communicated with an inner hole of the push ring 2;

the sealing ring 5 is installed in the sealing ring installation section 604, one end of the push ring 2, which is communicated with the contraction groove 203, is inserted into the connecting pipe 6 and is inserted into the inner hole of the anti-return spring gear ring 3, the push ring 2 axially compresses the anti-return spring gear ring 3, the sealing compression ring 4 and the sealing ring 5, and the anti-drop boss 201 is inserted into the first annular groove 601;

the end of the pipeline 1 is inserted into the pipeline socket section 605 after passing through a pipe limiting component respectively, the inner ring and the outer ring of the sealing ring 5 are in interference fit with the pipeline 1 and the sealing ring mounting section 604 respectively, meanwhile, the small-diameter end of the inner ring of the retaining spring gear ring 3 is in interference fit with the pipeline 1, and an annular space 7 is formed between one end of the push ring 2, which is at least close to the retaining spring gear ring 3, and the outer wall of the pipeline 1.

Preferably, the sealing ring 5 is an O-ring.

The connection principle is as follows: as shown in fig. 1, the sealing ring 5 is placed in the sealing ring installation section 604 of the adapter tube 6, and the sealing clamp ring 4 is tightly pressed on the sealing ring 5; then, mounting the retaining spring gear ring 3 on one side of the sealing compression ring 4, which is far away from the sealing ring 5; then, one end of the push ring 2, which is communicated with the shrinkage groove 203, is inserted into the adapter tube 6, when the anti-falling boss 201 is in contact with the end of the adapter tube 6, the push ring 2 is pushed forcefully to press the anti-falling boss 201, the anti-falling boss is extruded in the axial direction, the shrinkage groove 203 is reduced to reduce the outer diameter of the end of the push ring 2, and then the anti-falling boss 201 is smoothly pushed into the adapter tube 6 until the anti-falling boss 201 is inserted into the first annular groove, the shrinkage groove 203 recovers the original size, the anti-falling spring gear ring 3 is pressed on the sealing pressing ring 4 through the push ring 2, the sealing ring 5 is pressed by the sealing pressing ring 4, and meanwhile, the push ring 2 is limited in the first annular groove 601 through the anti-falling boss 21 arranged on the push ring 2; next, the pipe 1 is inserted into the end of the connection pipe 6, and inserted into the pipe socket section 605 of the connection pipe 6 after passing through the push ring 2, the retaining spring ring 3, the seal pressing ring 4, and the seal ring 5 in this order until abutting against the pipe stopper section 606. The internal diameter of sealing washer 5 is less than the external diameter of pipeline 1, and when pipeline 1 inserted the back, sealing washer 5 inside and outside diameter hugs closely respectively in the inner wall of the sealing washer installation section of takeover 6 and the 1 outer wall of pipeline, realizes sealed through close contact or interference fit, and this is initial seal. After pressure fluid is introduced into the pipeline 1, the pressure in the pipeline can generate outward thrust on the pipeline wall, so that the sealing ring 5 can be extruded, and the pressure in the pipeline can enable the sealing ring 5 to be flat and deformed so as to be attached to the outer wall of the pipeline and the inner wall of the connecting pipe more tightly. Simultaneously, along with the insertion of the pipe, the inner cone of the retaining spring gear ring is forward, the inner diameter of the retaining spring gear ring is in interference fit with the pipeline 1, namely, the inner diameter of the retaining spring gear is occluded on the outer wall of the pipeline 1, and the pipeline 1 cannot be separated from the pipeline so as to achieve the purpose of pulling resistance.

The disassembly principle is as follows: as shown in fig. 1 to 6, the anti-drop boss 201 is arranged on the push ring 2, when the pipeline is inserted into the connecting assembly, an annular space 7 is formed between the inner ring of the push ring 2 and at least one end of the push ring close to the retaining spring gear ring 3 and the outer wall of the pipeline 1, and one end of the push ring inner wall 2 close to the retaining spring gear ring 3 is not attached to the outer diameter of the pipeline 1; when the pipeline 1 needs to be disassembled, the occlusion between the retaining spring gear ring 3 and the pipeline 1 needs to be released, specifically, the push ring 2 is pushed towards the retaining spring gear ring 3, the anti-drop boss 201 arranged on the push ring 2 is limited in the first annular groove 601, during the process of pushing and pulling the push ring 2 along the axis, the anti-drop boss 201 can extrude the first annular groove 601, then the first annular groove 601 reversely acts on the inner wall of the anti-drop boss 2 to extrude the pipeline 1, because the inner ring of the push ring 2 is provided with the annular space 7 at least between one end close to the retaining spring gear ring 3 and the outer wall of the pipeline 1, the part of the push ring 2 opposite to the anti-drop boss 201 is pressed, moves towards the annular space 7, the contraction groove 203 is reduced, so that the outer diameter of the end of the push ring 2 is reduced, the outer diameter of the anti-drop boss 201 on the push ring 2 is reduced to separate from the first annular groove, at this time, the push ring 2 moves forwards, and then the push ring 2, thereby the internal diameter of the retaining spring gear ring 3 is expanded and separated from the occlusion with the pipeline 1, and the pipeline can be pulled out. Preferably, the one end of the hole that inserts stopping spring ring gear 3 on pushing ring 2 is provided with the conical surface, and its tapering is preferably when being in the original state with stopping spring ring gear 3, and the tapering of its inner hole pore wall is unanimous to the increase is when strutting stopping spring ring gear 3 internal diameter, pushes ring 2 and the contact surface between stopping spring ring gear 3, then struts stopping spring ring gear 3 more smoothly.

In summary, the connecting device for the pipeline designed by the utility model has the advantages of convenient installation and operation, short time consumption of installation work, high work efficiency and capability of connecting the pipeline without professional personnel and execution tools; the connecting structure can be detached from the pipeline, if the pipeline is changed and the connection is defective or the pipeline is changed during the installation of the pipeline, the pipeline can be pulled out, and related parts can be replaced or maintained without cutting off and re-constructing the pipe fittings or the pipeline, so that the maintenance cost is reduced, the auxiliary operation of the pipeline is convenient to install and construct, particularly temporarily; meanwhile, the pipeline is extremely convenient to disassemble, and the pipeline can be disassembled by pushing the push ring 2; meanwhile, in the whole pipeline connection process, no deformation phenomenon of the pipe fitting exists, and the sealing effect is good.

The inner ring of the push ring 2 comprises a contraction hole 204 and a matching hole 205, an annular space 7 is formed between the contraction hole 204 and the pipeline 1, the matching hole 205 is in transition fit with the pipeline 1, and the bottom of the contraction groove 203 is communicated with the contraction hole 204.

The constricting orifice 204 may be a constant diameter orifice, as shown in fig. 7, or may be a tapered orifice with a small diameter end connected to a mating orifice 205, as shown in fig. 1 and 2.

Example 2

This embodiment is a description of a specific implementation structure of the retaining spring ring gear 3 in embodiment 1.

As shown in fig. 8, the utility model discloses in, stopping spring ring gear 3 is made by an elastic ring body, is provided with a N interior logical groove 301 and a N outer logical groove 302 on the inside and outside circle of elastic ring body respectively, the axis that interior logical groove 301 and outer logical groove 302 all is parallel with the axis of elastic ring body, and interior logical groove 301 and outer logical groove 302 crisscross distribution in proper order to make stopping spring ring gear 3 become the circle body that an S extends in week, become a spring coil, thereby based on self elasticity and pipeline interference fit.

Further, the tapered structure of the retaining spring ring gear 3 is specifically as follows: the inner diameter and the outer diameter of the retaining spring gear ring 3 are gradually increased along with the distance from the sealing ring 5, namely, the retaining spring gear ring 3 is conical, the inner cone of the retaining spring gear ring faces the sealing ring 5, namely, the inner cone is opposite to the withdrawing direction of the pipeline, so that the retaining spring gear ring can be tightly meshed with the outer wall of the pipeline when the pipeline is withdrawn, the pipeline is prevented from being withdrawn, the pulling resistance is good, and one end, inserted into the connecting pipe 6, of the push ring 2 is inserted into the inner ring of the retaining spring gear ring 3.

Further, one end of the push ring 2, which is inserted into the adapter tube 6, is provided with a contact inclined surface 202, and the contact inclined surface 202 is in contact with the inner wall of the retaining spring gear ring 3, preferably, the inclination of the contact inclined surface 202 is consistent with that of the inner ring of the retaining spring gear ring 3.

Further, a second annular groove 602 is formed in the anti-drop ring mounting section and located on one side, close to the sealing ring mounting section 604, of the first annular groove 601, and one end, far away from the sealing ring 5, of the retaining spring gear ring 3 is inserted into the second annular groove 602, so that the retaining spring gear ring 3 is located in the axial direction, and convenience and rapidity in installation are improved.

Further, one side that is close to stopping spring ring gear 3 on the hole of sealed clamp ring 4 is provided with the bell mouth, the major diameter end of bell mouth is towards stopping spring ring gear 3, and the path end of stopping spring ring gear 3 inserts in the bell mouth, and the contact of the outer conical surface of stopping spring ring gear 3 and bell mouth pore wall has increased the contact surface between sealed clamp ring 4 and the stopping spring ring gear 3, promotes the stability of pipe connection.

Example 3

The present embodiment is further described with reference to embodiment 2.

As shown in fig. 9-11, in the utility model, the last one side that just is located second annular groove 602 and is close to sealing washer installation section 604 of anticreep ring installation section is provided with third annular groove 607, as shown in fig. 11, to sealing washer 5 promotion thrust ring 2, enables stopping spring ring gear 3 and sealed clamp ring 4 and all removes to sealing washer 5, and in anticreep boss 201 inserted second annular groove 602, the one end of keeping away from sealing washer 5 on the stopping spring ring gear 3 inserted third annular groove 607, sealing washer 5 axial compression.

When the pipeline is connected, as shown in fig. 9, the sealing ring 5 is arranged in the sealing ring mounting section 604 of the adapter tube 6, the sealing compression ring 2 is arranged behind the sealing ring 5, the large-diameter end of the retaining spring gear ring 3 is arranged in the second annular groove 602, and the push ring 2 is limited in the first annular groove 601 through the anti-drop boss 201 arranged above; the pipe is then inserted into the pipe stop section 606 of the nipple 6; then, the push ring 2 is pushed towards the sealing ring 5 by applying force axially, the anti-falling boss 201 is pressed and is extruded axially, the contraction groove 203 is reduced, so that the outer diameter of the end of the push ring 2 is reduced, the anti-falling boss 201 is pushed into the connecting pipe 6 smoothly, until the anti-falling boss 201 is inserted into the second annular groove, the contraction groove 203 recovers the original size, the thrust of the push ring 2 pushes the anti-falling spring gear ring 3, the sealing compression ring 4 and the sealing ring 5 to the sealing ring mounting section 604 in sequence, and as the anti-falling boss 201 is inserted into the second annular groove 602, one end of the anti-falling spring gear ring 3, which is far away from the sealing ring 5, is inserted into the third annular groove 607, as shown in fig. 10; at this time, the seal ring 5 is compressed and closely attached to the inner wall of the seal ring installation section 604 and the outer wall of the pipe 1, thereby achieving more efficient sealing performance. After the pushing ring 2 is pushed to achieve compression joint according to the actions, the large diameter of the retaining spring gear ring 3 is reversely locked in the third annular groove 607, the inner diameter is occluded on the outer wall of the pipeline 1, and the pipeline 1 cannot be separated to achieve the purpose of pulling resistance.

The utility model discloses in, through setting up third ring channel 607 to back in the pipe insertion is taken over, through the further axial of the spacing subassembly of geminate transistors compress tightly, not only promoted the utility model discloses a sealing performance has promoted pipe connection's stability simultaneously.

Example 4

In this embodiment, the structure of the push ring 2 is specifically explained on the basis of the above-mentioned embodiments.

As shown in fig. 6 and 7, the outer diameter of the push ring 2 includes a large diameter section and a small diameter section, and the anti-falling boss 201 and the contraction groove 203 are both disposed on the small diameter section.

Further, one side of the anti-disengaging boss 201 close to the small diameter end of the push ring 2 is connected with the outer wall of the push ring 2 through a conical surface, the large diameter end of the conical surface is connected with the middle part of the side wall of the anti-disengaging boss 201, the small diameter end of the conical surface is connected with the outer wall of the push ring 2, when the push ring 2 is pushed, the anti-disengaging boss 201 is just inserted into the first annular groove 601 when the large diameter section of the push ring is in contact with the connecting pipe 6, so that an installer can judge whether the anti-disengaging boss 201 is pushed in place by looking at the position of the push ring 2 outside.

One side of the anti-disengaging boss 201 close to the small diameter end of the push ring 2 is connected with the outer wall of the push ring 2 through a conical surface, so that when the push ring 2 is inserted into the connecting pipe 6, when the anti-disengaging boss 201 is contacted with the connecting pipe 6, the resistance between the anti-disengaging boss 201 and the connecting pipe 6 is slowly increased, so that a worker can insert the push ring 2 into the connecting pipe 6 by extruding the anti-disengaging boss 201, and the anti-disengaging boss 201 can be smoothly inserted into the first annular groove 601.

The shape and size of the longitudinal section of each annular groove are consistent with those of the longitudinal section of the anti-falling boss 201, namely, one side of each annular groove, which is close to the pipeline stopping section 606, is transited to the inner wall of the connecting pipe through an inclined plane, and one side of each annular groove, which is far away from the pipeline stopping section 606, is transited to the inner wall of the connecting pipe through a plane perpendicular to the axis, so that when the push ring 2 is pushed towards the sealing ring 5, labor is saved; but the movement away from the sealing ring 5 is laborious and even cannot be generated, thereby ensuring the stability of the installation of the push ring 2.

Further, a transition section is arranged between the large-diameter section and the small-diameter section of the anti-falling boss 201, the transition section is conical, an oblique angle chamfer is arranged at the end part of the inner hole of the connecting pipe 6, and the oblique angle chamfer is in contact with the transition section.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions conceived by the inventive work within the technical scope disclosed by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (10)

1. The utility model provides a detachable quick-witted connecting device that inserts of concave ring formula, includes two pipelines (1) and with two pipeline (1) fixed connection's coupling assembling, its characterized in that: the connecting assembly comprises a connecting pipe (6) and a pipe limiting assembly, wherein a pipeline stopping section (606), a pipeline socket section (605), a sealing ring mounting section (604) and a drop-proof ring mounting section are sequentially arranged on the inner wall of the connecting pipe (6) from the middle part to two ends, the inner diameters of the pipeline stopping section (606), the pipeline socket section (605) and the sealing ring mounting section (604) are sequentially increased, and the inner diameter of the drop-proof ring mounting section is not less than that of the sealing ring mounting section (604);

a first annular groove (601) with the axis coincident with the axis of the connecting pipe (6) is arranged at the anti-drop ring mounting section;

the two pipe limiting assemblies are respectively positioned at two ends of the connecting pipe (6), each pipe limiting assembly comprises a push ring (2), a stopping spring gear ring (3), a sealing pressing ring (4) and a sealing ring (5), the axes of the push rings are coincident with the axis of the connecting pipe (6), and the push rings and the stopping spring gear rings are sequentially and axially pressed, the stopping spring gear rings (3) are conical, and the small-diameter ends of the stopping spring gear rings face the sealing pressing ring (4); the anti-falling boss (201) is convexly formed on the circumferential side wall of the push ring (2) along the circumference of the circumferential side wall, a contraction groove (203) is formed in one side of the circumferential side wall of the push ring (2), one end of the contraction groove (203) is communicated with the end part of the push ring (2), and the groove bottom of the contraction groove is communicated with an inner hole of the push ring (2);

the sealing ring (5) is arranged in a sealing ring mounting section (604), one end of the push ring (2) communicated with the contraction groove (203) is inserted into the connecting pipe (6) and the inner hole of the retaining spring gear ring (3), and the anti-falling boss (201) is inserted into the first annular groove (601);

the end part of the pipeline (1) penetrates through a pipe limiting component respectively and then is inserted into the pipeline socket section (605), the inner ring and the outer ring of the sealing ring (5) are in interference fit with the pipeline (1) and the sealing ring mounting section (604) respectively, the small-diameter end of the inner ring of the stopping spring gear ring (3) is in interference fit with the pipeline (1), and an annular space (7) is formed between one end, at least close to the stopping spring gear ring (3), of the inner ring of the push ring (2) and the outer wall of the pipeline (1).

2. The female ring type detachable quick-plug connecting device of claim 1, wherein: the inner ring of the push ring (2) comprises a contraction hole (204) and a matching hole (205), an annular space (7) is formed between the contraction hole (204) and the pipeline (1), the matching hole (205) is in transition fit with the pipeline (1), and the bottom of the contraction groove (203) is communicated with the contraction hole (204).

3. The female ring type detachable quick-plug connecting device of claim 2, wherein: the shrinkage hole (204) is a tapered hole, and the small-diameter end of the shrinkage hole is connected with the matching hole (205).

4. The female ring type detachable quick-plug connecting device of claim 1, wherein: the retaining spring gear ring (3) is made of an elastic ring body, N inner through grooves (301) and N outer through grooves (302) are respectively arranged on the inner ring and the outer ring of the elastic ring body, the axes of the inner through grooves (301) and the outer through grooves (302) are parallel to the axis of the elastic ring body, and the inner through grooves (301) and the outer through grooves (302) are distributed in a staggered mode in sequence.

5. The female ring type detachable quick-plug connecting device of claim 4, wherein: the inner diameter and the outer diameter of the retaining spring gear ring (3) are gradually increased along with the distance from the sealing ring (5), and one end of the push ring (2) inserted into the connecting pipe (6) is inserted into the inner ring of the retaining spring gear ring (3).

6. The female ring type detachable quick-plug connecting device of claim 5, wherein: one end of the push ring (2) inserted into the connecting pipe (6) is provided with a contact inclined plane (202), and the contact inclined plane (202) is in contact with the inner wall of the retaining spring gear ring (3).

7. The female ring type detachable quick-plug connecting device of claim 5, wherein: and a second annular groove (602) is formed in the anti-drop ring mounting section and is positioned on one side, close to the sealing ring mounting section (604), of the first annular groove (601), and one end, far away from the sealing ring (5), of the retaining spring gear ring (3) is inserted into the second annular groove (602).

8. The female ring type detachable quick-plug connecting device of claim 7, wherein: one side that just is located second annular groove (602) and is close to sealing washer installation section (604) on the anticreep ring installation section is provided with third ring channel (607), promotes to sealing washer (5) and pushes away circle (2), enables stopping spring ring gear (3) and sealed clamp ring (4) and all removes to sealing washer (5), and anticreep boss (201) insert in second ring channel (602), keep away from the one end of sealing washer (5) on stopping spring ring gear (3) and insert in third ring channel (607), sealing washer (5) axial compression.

9. The female ring type detachable quick-plug connecting device according to any one of claims 1 to 8, wherein: one side that is close to stopping spring ring gear (3) on the hole of sealed clamp ring (4) is provided with the bell mouth, the major diameter end of bell mouth is towards stopping spring ring gear (3), and the path end of stopping spring ring gear (3) inserts in the bell mouth.

10. The female ring type detachable quick-plug connecting device according to any one of claims 1 to 8, wherein: the outer diameter of the push ring (2) comprises a large-diameter section and a small-diameter section, and the anti-falling boss (201) and the contraction groove (203) are both arranged on the small-diameter section; one side of the anti-falling boss (201) close to the small-diameter end of the push ring (2) is connected with the outer wall of the push ring (2) through a conical surface, the large-diameter end of the conical surface is connected with the middle part of the side wall of the anti-falling boss (201), and the small-diameter end of the conical surface is connected with the outer wall of the push ring (2).

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