CN203442379U

CN203442379U - Quick-inserting-type pipe joint

Info

Publication number: CN203442379U
Application number: CN201320404605.8U
Authority: CN
Inventors: 周剑飞; 张旭东; 张丽红; 朱振芳
Original assignee: HAIYAN HAIGUAN PIPE FITTING MANUFACTURING Co Ltd
Current assignee: HAIYAN HAIGUAN PIPE FITTING MANUFACTURING Co Ltd
Priority date: 2013-07-09
Filing date: 2013-07-09
Publication date: 2014-02-19
Anticipated expiration: 2023-07-09

Abstract

The utility model relates to a quick-inserting-type pipe joint which is especially applicable to connection of pipe joints and hoses. The quick-inserting-type pipe joint comprises a pipe joint seat and a sleeve pipe. A sleeve pipe connecting section and a hose connecting section are arranged on the pipe joint seat. The quick-inserting-type pipe joint further comprises a clamping blade, a limiting face, a guiding inclined plane, an elastic retainer ring and a first seal ring, wherein the elastic retainer ring and the first seal ring are arranged on the top face of the quick-inserting-type pipe joint. The elastic retainer ring comprises an opening and is provided with an outer conical face and an inner conical face is arranged inside the sleeve pipe. The quick-inserting-type pipe joint has the following advantages that the structure is simple, the design is reasonable and operation is convenient; after installation is completed, the elastic retainer ring can be folded and enables the clamping blade to clamp a hose due to the elasticity of the elastic retainer ring; when pulling-out external force is exerted on the hose, the elastic retainer ring can move along the inner conical face of the sleeve pipe to be folded due to the fact that the clamping blade clamps the hose, at the moment, the inner diameter of the clamping blade becomes smaller, the larger the exerted external force is, the tighter the folding of the elastic retainer ring will be and the smaller the inner diameter of the clamping blade is, and therefore if the clamping blade clamps the hose tightly, the hose cannot be pulled out and connection is reliable.

Description

A kind of Quick-insertion type pipe joint

Technical field

The utility model relates to a kind of Quick-insertion type pipe joint, is specially adapted to being connected of pipe joint and flexible pipe.

Background technique

In prior art, flexible pipe and pipe joint is connected, normally flexible pipe is directly socketed on the flexible pipe linkage section of pipe joint, although can realize connection, this Placement unreliable, the effect being connected easily because of the aging or external force of flexible pipe of flexible pipe and linkage section comes off.

Chinese patent application publication No. CN 102996953 A, a kind of rapid pipe joint of metallic hose is disclosed, by screw press seal part that the mode of spiral fastener makes its underpart to corrugated flexible metal tube clamp, spacing, the cutting ferrule that tightens up being provided with by joint body rearward end seals corrugated flexible metal tube and fixes, the complex structure of this Placement, increased cost, and troublesome poeration while connecting, labor intensity increased.

Chinese patent publication No. CN 101893146 A, disclose a kind of hose coupling, this hose coupling be by hose proof on expand tube bolt, and prevent that by the non slip surface of banded penstock nut flexible pipe from skidding off.When but this hose coupling is installed, first banded penstock nut sleeve to be connected on the tube head of flexible pipe, to connect again and live nut empty set on expand tube bolt, grip has the guiding section of the expand tube bolt that connects the nut of living to aim at the pipe connecting thread and the endoporus that is connected flexible pipe on banded penstock nut, with hand or spanner, hold banded penstock nut, it can not be rotated, inner hexagon spanner inserted in the inner hexagonal hole of expand tube bolt and axially firmly turn expand tube bolt along expand tube bolt.Expand tube bolt also screws until screw thread travel is complete with banded penstock nut when screw-in is connected flexible pipe, joint is just installed on flexible pipe, finally " O " shape rubber seal is sleeved on the step seam of expand tube bolt, and the pretension connecting thread that connection is lived on nut is aimed at the screw thread of connected equipment or instrument, finally use spanner (or directly using hand) will connect the nut screwing clamping of living, thereby installation process is very loaded down with trivial details.

Model utility content

The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of reasonable in design, good seal performance, reliable performance, easy to operate Quick-insertion type pipe joint.

The technical scheme in the invention for solving the above technical problem is: this Quick-insertion type pipe joint, comprise pipe joint seat and sleeve pipe, described pipe joint seat is hollow structure, described pipe joint seat is provided with sleeve pipe linkage section, described sleeve pipe linkage section is connected with casing threads, described pipe joint seat is provided with flexible pipe linkage section, and this flexible pipe linkage section is positioned at sleeve pipe, it is characterized in that: also comprise and there is clamping sword, confined planes, the elastic collar of guiding surface and end face and the end face of elastic collar is there is to a seal ring of limit function, described elastic collar has opening, described elastic collar is provided with male cone (strobilus masculinus), in described sleeve pipe, be provided with inner conical surface, described inner conical surface is less than the diameter away from the end face of sleeve pipe inlet near the diameter of the end face of sleeve pipe inlet, the male cone (strobilus masculinus) of described elastic collar and the inner conical surface of sleeve pipe match, the inner conical surface of described sleeve pipe projects to the length that male cone (strobilus masculinus) that length on casing axis is greater than elastic collar projects to casing axis, described elastic collar is engaged on the inner conical surface of sleeve pipe by its male cone (strobilus masculinus), described guiding surface and casing axis acutangulate, and described clamping sword is positioned at the inner side of elastic collar, and described confined planes is between end face and clamping sword, described sleeve pipe is provided with seal groove No. one, and No. one seal ring is contained in a seal groove.Under normality, the internal diameter of flexible pipe is less than the external diameter of flexible pipe linkage section, and the internal diameter of clamping sword and the external diameter of flexible pipe of elastic collar match; When being inserted in flexible pipe linkage section, flexible pipe will swell, the external diameter of flexible pipe becomes the outer wall promotion elastic collar that makes greatly flexible pipe, elastic collar moves along the inner conical surface of sleeve pipe, owing to being subject to the spacing of a seal ring, now the opening of elastic collar will become large, the internal diameter of clamping sword can become large thereupon, so that flexible pipe can pass through smoothly, guiding surface plays leading role to flexible pipe when flexible pipe is installed, it is more smooth and easy when flexible pipe is inserted, now a seal ring plays position-limiting action to elastic collar, prevents that elastic collar from departing from the inner conical surface of sleeve pipe and losing efficacy; After tube socket completes, between seal ring and flexible pipe, form sealing; When flexible pipe is applied to the external force pulling outward, because clamping sword can block flexible pipe, thereby elastic collar will move along the inner conical surface of sleeve pipe and draw in, the internal diameter that now clamps sword diminishes, externally applied forces is larger, and it is tighter that elastic collar draws in, and the internal diameter of clamping sword is less, thereby tighter to hose clip of clamping sword, flexible pipe cannot be pulled out; The setting of confined planes can limit the degree of depth that clamping sword inserts flexible pipe, making can be because of mounted flexible pipe is applied excessive pulling force and makes elastic collar integral body thrust flexible pipe and cause larger otch on flexible pipe, of long duration easily because this otch causes the fracture of flexible pipe, and the angle forming between confined planes and end face can play the effect of hangnail, further prevent that flexible pipe from deviating from; Concerning operator, only flexible pipe need be inserted to flexible pipe linkage section can complete connection, easy to operate.

On pipe joint seat described in the utility model, have circular groove, this circular groove is between flexible pipe linkage section and sleeve pipe linkage section and coaxial with flexible pipe linkage section, and the degree of depth of circular groove is greater than notch to the distance of flexible pipe linkage section end face.During installation, flexible pipe is directly inserted in this circular groove, makes sealing effect better, connects more reliable.

Pipe joint seat described in the utility model is provided with step, is provided with No. two seal groove between step and sleeve pipe linkage section, and No. two seal ring is contained in seal groove No. two, and sleeve pipe is pressed on No. two seal rings and forms and seal.No. two seal rings can prevent that sleeve pipe from revealing with being threaded of pipe joint seat.

The utility model also comprises seal ring No. three, and the inlet of described sleeve pipe is provided with seal groove No. three, and No. three seal ring is contained in No. three seal grooves.Between No. three seal rings and flexible pipe, form sealing, make sealing effect better.

Pipe joint seat described in the utility model is provided with thread section.Thread section is for connection device or pipeline.

The utility model compared with prior art, have the following advantages and effect: simple in structure, reasonable in design, when Quick-insertion type pipe joint is connected with flexible pipe, only flexible pipe need be inserted to this Quick-insertion type pipe joint, easy to operate, after installation, elastic collar is because the elasticity of self will be drawn in, and make to clamp sword card main flexible tube, when flexible pipe is applied to the external force pulling outward, because clamping sword blocks flexible pipe, thereby elastic collar will move along the inner conical surface of sleeve pipe and draw in, the internal diameter that now clamps sword diminishes, externally applied forces is larger, it is tighter that elastic collar draws in, the internal diameter of clamping sword is less, thereby tighter to hose clip of clamping sword, flexible pipe cannot be pulled out, connect reliable.

Accompanying drawing explanation

Fig. 1 is the structural representation of Quick-insertion type pipe joint in the utility model embodiment.

Fig. 2 is the sectional structure schematic diagram of Quick-insertion type pipe joint in the utility model embodiment.

Fig. 3 is the schematic cross-section of elastic collar.

The schematic perspective view of Fig. 4 elastic collar.

Fig. 5 is the structural representation that Fig. 2 packs flexible pipe into.

Embodiment

Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.

Embodiment.

Referring to Fig. 1 to Fig. 5, the Quick-insertion type pipe joint in the present embodiment comprises pipe joint seat 1, sleeve pipe 2, elastic collar 3, seal ring 4, No. two seal rings 5, No. three seal rings 6 and flexible pipes 7.Wherein, pipe joint seat 1 comprises sleeve pipe linkage section 11, flexible pipe linkage section 12, No. two seal grooves 13, circular groove 14, step 15 and thread sections 16, sleeve pipe comprises inner conical surface 21, inlet 22, No. three seal grooves 23, seal groove 24, axis 25 and a sideline 26, and elastic collar 3 comprises opening 31, male cone (strobilus masculinus) 32, clamping sword 33, guiding surface 34, end face 35 and confined planes 36.Elastic collar 3 under normality and the internal diameter of a seal ring 4 are all less than flexible pipe 7 and are inserted in the external diameter s after flexible pipe linkage section 12, the internal diameter e of the flexible pipe 7 under normality is less than the external diameter f of flexible pipe linkage section 12, thereby flexible pipe 7 is when be connected with flexible pipe linkage section 12, flexible pipe 7 will swell, and the internal diameter e of flexible pipe 7 will become large.

Pipe joint seat 1 in the present embodiment is hollow structure, pipe joint seat 1 is provided with sleeve pipe linkage section 11, sleeve pipe linkage section 11 is threaded with sleeve pipe 2, pipe joint seat 1 is provided with for being socketed the flexible pipe linkage section 12 of flexible pipe 7, after pipe joint seat 1 is threaded with sleeve pipe 2, this flexible pipe linkage section 12 is positioned at sleeve pipe 2, and have circular groove 14 between flexible pipe linkage section 12 and sleeve pipe linkage section 11, flexible pipe 7 can be inserted in circular groove 14, increase its sealing effect, the degree of depth L of circular groove 14 is greater than notch to the distance H of flexible pipe linkage section 12 end faces, makes to connect more reliable, elastic collar 3 has opening 31, make it have the condition of opening gathering, elastic collar 3 is provided with male cone (strobilus masculinus) 32, in sleeve pipe 2, be provided with inner conical surface 21, inner conical surface 21 is less than the diameter j away from the end face at sleeve pipe 2 import 22 places near the diameter i of the end face of sleeve pipe 22 inlets, the male cone (strobilus masculinus) 32 of elastic collar 3 matches with the inner conical surface 21 of sleeve pipe 2, elastic collar 3 is engaged on the inner conical surface 21 of sleeve pipe 2 by its male cone (strobilus masculinus) 32, and elastic collar 3 can move along the inner conical surface 21 of sleeve pipe and make the opening 31 of elastic collar 3 open or draw under external force, the male cone (strobilus masculinus) 32 that the length c that the inner conical surface 21 of sleeve pipe 2 projects to the axis 25 of sleeve pipe 2 is herein greater than elastic collar 3 projects to the length d of the axis 25 of sleeve pipe 2, therefore make elastic collar 3 have condition mobile on sleeve pipe 2 inner conical surfaces 21, elastic collar 3 is provided with clamping sword 33, confined planes 36, guiding surface 34 and end face 35, guiding surface 34 acutangulates n with sleeve pipe 2 axis 25, as preferably, acute angle n is 30 degree, and guiding surface 34 plays leading role to flexible pipe 7 when flexible pipe 7 is installed, and makes the installation of flexible pipe 7 more smooth and easy, clamping sword 33 is positioned at the inner side of elastic collar 3, confined planes 36 is between end face 35 and clamping sword 33, and confined planes 36, for limiting the degree of depth of clamping sword 33 incision flexible pipes 7, prevents from causing flexible pipe 7 to damage, sleeve pipe 2 is provided with seal groove 24 No. one, No. one seal ring 4 is contained in a seal groove 24, the end face 35 of 4 pairs of elastic collars 3 of a seal ring has seal ring 4 of limit function can prevent that elastic collar 3 from skidding off and losing efficacy left, and 4 pairs of flexible pipes 7 of a seal ring play the effect of sealing.

In the present embodiment, between confined planes 36 and end face 35, form acute angle a, the angle a forming between confined planes and end face can play the effect of hangnail, further prevents that flexible pipe 7 from deviating from, and as preferably, the angle of a is 60 degree.

Pipe joint seat 1 in the present embodiment is provided with step 15, between step 15 and sleeve pipe linkage section 11, be provided with No. two seal groove 13, No. two seal ring 5 is contained in No. two seal grooves 13, sleeve pipe 2 is pressed on No. two seal rings 5 and forms and seal, 5 pairs of sleeve pipe linkage sections 11 of No. two seal rings seal, and No. two seal rings 5 can prevent that sleeve pipe 2 from revealing with being threaded of pipe joint seat 1.

The inlet 22 of the sleeve pipe 2 in the present embodiment is provided with 23, No. three seal rings 6 of No. three seal grooves and is contained in No. three seal grooves 23, forms sealing between No. three seal rings 6 and flexible pipe 7, prevents from revealing in sleeve pipe 2 inlets 22.

Pipe joint seat 1 in the present embodiment is provided with thread section 16, and thread section 16 is for connection device or pipeline, and step 15 and No. two 16 of thread sections can arrange seal ring, increases the sealing of pipe joint seat 1 and equipment or pipeline.

The working principle of the present embodiment: will swell when flexible pipe 7 is inserted in flexible pipe linkage section 12, the external diameter s of flexible pipe becomes the outer wall promotion elastic collar 3 that makes greatly flexible pipe 7, elastic collar 3 can move along the inner conical surface 21 of sleeve pipe 2, owing to being subject to the spacing of a seal ring 4, now the opening 31 of elastic collar 3 will become large, the internal diameter g of clamping sword 33 can become greatly thereupon, so that flexible pipe 7 can pass through smoothly, more smooth and easy when the setting of guiding surface 34 can make flexible pipe 7 insert; After flexible pipe 7 has been socketed, between seal ring 4 and flexible pipe 7, form sealing, therefore just completed the installation of flexible pipe 7; After installation, elastic collar 3 is because the elasticity of self will be drawn in, and clamping sword 33 card main flexible tubes 7, when flexible pipe 7 is applied to the external force pulling outward, because clamping sword 33 blocks flexible pipe 7, thereby elastic collar 4 will move along the inner conical surface 21 of sleeve pipe 2 and draw in, the internal diameter g that now clamps sword 33 diminishes thereupon, and externally applied forces is larger, it is tighter that elastic collar 3 draws in, the internal diameter g of clamping sword 33 is less, thereby clamps the tighter of 33 pairs of flexible pipes of sword, 7 cards, makes flexible pipe 7 difficult drop-offs; Being arranged so that of confined planes 36 can be because of mounted flexible pipe 7 is applied excessive pulling force and makes elastic collar 3 integral body thrust flexible pipe 7 and cause larger otch on flexible pipe 7, of long duration easily because of this otch, cause the fracture of flexible pipe 7, and the angle a forming between confined planes 36 and end face 35 can play the effect of hangnail, further prevent that flexible pipe 7 from deviating from; Concerning operator, only flexible pipe 7 need be inserted.

In addition, it should be noted that, the specific embodiment described in this specification, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this specification is only to the explanation of the utility model structure example.All equivalence variation or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.

Claims

1. a Quick-insertion type pipe joint, comprises pipe joint seat and sleeve pipe, and described pipe joint seat is hollow structure, described pipe joint seat is provided with sleeve pipe linkage section, described sleeve pipe linkage section is connected with casing threads, and described pipe joint seat is provided with flexible pipe linkage section, and this flexible pipe linkage section is positioned at sleeve pipe, it is characterized in that: also comprise and there is clamping sword, confined planes, the elastic collar of guiding surface and end face and the end face of elastic collar is there is to a seal ring of limit function, described elastic collar has opening, described elastic collar is provided with male cone (strobilus masculinus), in described sleeve pipe, be provided with inner conical surface, described inner conical surface is less than the diameter away from the end face of sleeve pipe inlet near the diameter of the end face of sleeve pipe inlet, the male cone (strobilus masculinus) of described elastic collar and the inner conical surface of sleeve pipe match, the inner conical surface of described sleeve pipe projects to the length that male cone (strobilus masculinus) that length on casing axis is greater than elastic collar projects to casing axis, described elastic collar is engaged on the inner conical surface of sleeve pipe by its male cone (strobilus masculinus), described guiding surface and casing axis acutangulate, and described clamping sword is positioned at the inner side of elastic collar, and described confined planes is between end face and clamping sword, described sleeve pipe is provided with seal groove No. one, and No. one seal ring is contained in a seal groove.

2. Quick-insertion type pipe joint according to claim 1, it is characterized in that: on described pipe joint seat, have circular groove, this circular groove is between flexible pipe linkage section and sleeve pipe linkage section and coaxial with flexible pipe linkage section, and the degree of depth of circular groove is greater than notch to the distance of flexible pipe linkage section end face.

3. Quick-insertion type pipe joint according to claim 1 and 2, it is characterized in that: described pipe joint seat is provided with step, between step and sleeve pipe linkage section, be provided with No. two seal groove, No. two seal ring is contained in seal groove No. two, and sleeve pipe is pressed on No. two seal rings and forms and seal.

4. Quick-insertion type pipe joint according to claim 1 and 2, is characterized in that: comprise seal ring No. three, the inlet of described sleeve pipe is provided with seal groove No. three, and No. three seal ring is contained in No. three seal grooves.

5. Quick-insertion type pipe joint according to claim 1 and 2, is characterized in that: described pipe joint seat is provided with thread section.