CN201425138Y

CN201425138Y - High-strength connector for engineering plastic tube fittings

Info

Publication number: CN201425138Y
Application number: CN2009201189388U
Authority: CN
Inventors: 黄新萍
Original assignee: ZHEJIANG ZHONGYI PIPE CO Ltd
Current assignee: ZHEJIANG ZHONGYI PIPE CO Ltd
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-03-17
Anticipated expiration: 2019-04-30

Abstract

The utility model discloses a high-strength connector for engineering plastic tube fittings, which comprises a connector body with a runner in the center thereof, and a hollow ferrule body, wherein anouter casing is arranged between the ferrule body and the connector body, the outer casing and the connector body are movably connected in a clamping manner through a clamping mechanism, the outer casing can rotate around the connector body, the outer casing and the connector body are fixedly connected, and the ferrule body and the outer casing are made of a high-strength engineering plastic; theclamping mechanism comprises a stop block part arranged at the rear part of the connector body and a non-return structural clamping hook part arranged at the front end of the stop block, the rear endsurface of the outer casing are movably propped against the stop block part, and a clamping step corresponding to the clamping hook part is arranged in the outer casing and movably clamped on the clamping hook part, thereby achieving the rotational connection of the outer casing and the connector body. In the utility model, the angular adjustment of connecting pipes at the two ends of the connector body can be conveniently installed and adjusted, the complicated operation is not required, and the problems of poor leak tightness and stability of the prior tube fitting connectors are solved.

Description

High-strength engineering plastic pipe joint

Technical field

The utility model relates to a kind of pipe fitting joint.

Background technique

Pipe fitting joint is used for each pipe fitting of connecting pipeline.China national Department of Intellectual Property has announced one November 15 in 2006 and has been called a kind of pipe fitting joint, and notification number is CN1862069.According to its specification embodiment part in conjunction with Figure of description Fig. 1 as can be known: this pipe fitting joint swagelok end has an internal diameter expansion area, the outside of this expansion area is outward-dipping conical surface, the inboard is a circular step, be set on outward on this step, overcoat adopts the food grade silica gel material to make, pad and overcoat are arranged side by side, and overcoat and pad can endwisely slip at the internal chamber wall that connects sleeve pipe.This overcoat can play certain seal action, but because it needs to slide in the axial direction, to the requirement height of sealing, only depends on to overlap in addition to seal instability, poor reliability, and sealing effect is not good.

The model utility content

The utility model the technical problem that will just solve just provide a kind of high-strength engineering plastic pipe joint, can conveniently install and adjust the angular adjustment of fittings body two pipe nipples, need not numerous and diverse operation, also can effectively solve the problem of existing pipe fitting joint sealing, poor stability.

In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: high-strength engineering plastic pipe joint, it is characterized in that: comprise that the center is provided with the fittings body of runner and the cutting ferrule body of hollow, also be provided with overcoat between described cutting ferrule body and fittings body, overcoat and fittings body are by the active clamping of clamping mechanism, overcoat can rotate around fittings body, and overcoat is fixedlyed connected with fittings body, and described cutting ferrule body and overcoat are that high-strength engineering plastic is made.Overcoat can rotate around fittings body, and the convenient like this angular adjustment of installing and adjusting fittings body two pipe nipples need not numerous and diverse operation.

Described clamping mechanism comprises the stopper portions that is located at the fittings body rear portion and is located at the hook part of the non-return structure of block front end, the ear end face of described overcoat is active to be connected on the stopper portions, be provided with the clamping step corresponding in the overcoat with blocking ditch portion, describedly connect that step is active to be connected on the card hook part, thereby realize being rotationally connected of overcoat and fittings body.Only overcoat need be inserted fittings body during installation and also tightly prop up on the stopper portions, hook part be snapped onto on the clamping step get final product.

Also be provided with a high-order step by stopper portions one side on the stopper portions of described fittings body and the anchor ring between the hook part, by conical surface I transition, described overcoat ear end face is provided with cylinder I and the conical surface II corresponding with described high-order step and conical surface I from outside to inside successively between described high-order step and the described anchor ring.Make like this and have better sealing effect between overcoat and the fittings body.

Described cutting ferrule body ear end face is provided with draw-in groove, and described overcoat front end is provided with the bulge loop corresponding with described draw-in groove, and described bulge loop closely is plugged in the draw-in groove and hot melt connects.

Described cutting ferrule body also is provided with seal arrangement with outer inner room, described seal arrangement comprises the active seal ring and the back-up ring that is installed in the overcoat that is installed in the cutting ferrule body, described seal ring front end is provided with the seal ring taper mouth of pipe, be provided with in the cutting ferrule body and the corresponding conical surface of the seal ring taper mouth of pipe, conical surface rear portion on the cutting ferrule body is the cylinder II corresponding with the external annulus face of back-up ring, described seal ring rear end apical grafting is at the back-up ring front end, and the rear end is provided with the back-up ring step in the overcoat, and back-up ring rear end apical grafting is on the back-up ring step.

Described seal ring rear end is provided with seal ring taper seam, and described back-up ring front end is provided with the back-up ring taper seam corresponding with seal ring taper seam, and seal ring taper seam is plugged on the back-up ring taper seam.Be connected more stablely like this between seal ring and the back-up ring, be not easy to tremble.

Described back-up ring rear end is the eccentric circular ring wall construction, and the small end apical grafting of fan-shaped ring wall is on the back-up ring step.Material can be saved for the eccentric circular ring wall construction in the back-up ring rear end.

Be provided with plurality of strengthening ribs in the described overcoat, can increase pipe fitting intensity, prevent the area of stress concentration fracture, described stiffening rib while apical grafting is on the back-up ring ear end face of fan-shaped relatively ring wall opposite side on the back-up ring.

Described stiffening rib is symmetrically arranged two, and described back-up ring ear end face is provided with stopping projection, and described stopping projection intercalation makes back-up ring can not rotate between two stiffening ribs.

The utility model is owing to adopted technique scheme, cutting ferrule body and overcoat are that high-strength engineering plastic is made, and overcoat can rotate around fittings body, the convenient like this angular adjustment of installing and adjusting fittings body two pipe nipples, need not numerous and diverse operation, made things convenient for and produced and install.Before pipe fitting joint is installed, overcoat can be enclosed within on the cutting ferrule body earlier, the installation of being convenient to fittings body connects, pipe fitting joint after the installation, sealing effect is divided into two-part, a part is the overcoat in cutting ferrule body rear end, and another part is the seal ring at cutting ferrule body middle part, and the conical surface in the seal ring taper mouth of pipe of seal ring and the cutting ferrule body is combined closely.The utility model product removes fittings body and back-up ring is a metal material, other are the high-strength engineering plastic material, its mechanical strength and brass are approximate, the fittings body helical pitch is long anti-good around property, overcoat adopts silastic material, and the circle footpath can thicken processing, makes sealing more reliable, more brisk when pipe fitting joint inserts mouth of pipe Leading end chamfer, more obvious, easy for installation in conjunction with sense.Improved the sealing of pipe fitting joint greatly.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of the utility model high-strength engineering plastic pipe joint;

Fig. 2 is for being enclosed among Fig. 1 M outward to view;

Fig. 3 be among Fig. 2 N-N to sectional view;

Fig. 4 is the structural representation of the utility model guide ring;

Structural representation when Fig. 5 keeps flat for back-up ring;

Fig. 6 is the structural representation of seal ring in the utility model;

Fig. 7 is the sectional view of cutting ferrule body in the utility model;

Fig. 8 is the sectional view of the utility model embodiment middle joint body;

Fig. 9 is that overcoat in the utility model, back-up ring, seal ring and cutting ferrule body cooperate schematic representation.

Embodiment

Extremely shown in Figure 9 as Fig. 1, be applied in the embodiment at elbow two ends for the utility model high-strength engineering plastic pipe joint, the elbow two ends are fittings body 1, fittings body 1 front end is the cutting ferrule body 2 of hollow, 1 of described cutting ferrule body 2 and fittings body also are provided with overcoat 5, and described overcoat 5 passes through the active clamping of clamping mechanism with fittings body, and overcoat can rotate around fittings body, overcoat is fixedlyed connected with fittings body, and described cutting ferrule body 2 and overcoat 5 are made for high-strength engineering plastic.Described clamping mechanism comprises stopper portions 11 that is located at the fittings body rear portion and the hook part 12 that is located at the block front end, and the ear end face 51 of overcoat 5 is connected on the stopper portions 11, is provided with the clamping step 52 corresponding with blocking ditch portion 12 in the overcoat 5.Also be provided with a high-order step 14 by stopper portions one side on the stopper portions 11 of described fittings body and the anchor ring 13 between the hook part 12, by conical surface I15 transition, overcoat 5 ear end faces are provided with cylinder I53 and the conical surface II54 corresponding with high-order step 14 and conical surface I15 from outside to inside successively between high-order step and the anchor ring 13.Described cutting ferrule body ear end face 21 is provided with draw-in groove 22, and overcoat 5 front ends are provided with the bulge loop 55 corresponding with described draw-in groove 22, and bulge loop 55 closely is plugged in the draw-in groove 2 and hot melts connect.Described cutting ferrule body 2 also is provided with seal arrangement with outer inner room, seal arrangement comprises the active seal ring 3 and the back-up ring 4 that is installed in the overcoat 5 that is installed in the cutting ferrule body 2, seal ring 3 front ends are provided with the seal ring taper mouth of pipe 31, be provided with the conical surface 21 corresponding in the cutting ferrule body 2 with the seal ring taper mouth of pipe 31, the conical surface 23 rear portions on the cutting ferrule body 2 are the cylinder II24 corresponding with the external annulus face of back-up ring 4, described seal ring 3 rear end apical graftings are at back-up ring 4 front ends, the rear end is provided with back-up ring step 56 in the overcoat 5, and back-up ring 4 rear end apical graftings are on back-up ring step 56.Seal ring 3 rear ends are provided with seal ring taper seam 32, and back-up ring 4 front ends are provided with the back-up ring taper seam 41 corresponding with seal ring taper seam 32, and seal ring taper seam 32 is plugged on the back-up ring taper seam 41.Described back-up ring 4 rear ends are fan-shaped ring wall 42 structures, and small end 43 apical graftings of fan-shaped ring wall 42 are on back-up ring step 56.Be provided with plurality of strengthening ribs 57 in the described

overcoat

5,57 while of stiffening rib, apical grafting was on the back-up ring ear end face 44 of fan-shaped relatively ring wall 42 opposite sides on the back-up ring 4.Stiffening rib 57 is symmetrically arranged two in the present embodiment, and back-up ring ear end face 44 is provided with stopping projection 45, and stopping projection 45 intercalations are between two stiffening ribs 57.

Claims

1, high-strength engineering plastic pipe joint, it is characterized in that: comprise that the center is provided with the cutting ferrule body (2) of fittings body of runner (1) and hollow, also be provided with overcoat (5) between described cutting ferrule body (2) and fittings body (1), overcoat (5) passes through the active clamping of clamping mechanism with fittings body, overcoat can rotate around fittings body, overcoat is fixedlyed connected with fittings body, and described cutting ferrule body (2) and overcoat (5) are made for high-strength engineering plastic.

2, high-strength engineering plastic pipe joint according to claim 1, it is characterized in that: described clamping mechanism comprises the stopper portions (11) that is located at fittings body (1) rear portion and is located at the hook part (12) of the non-return structure of block front end, the ear end face (51) of described overcoat (5) is active to be connected on the stopper portions (11), be provided with the clamping step (52) corresponding in the overcoat (5), active being connected on the hook part of described clamping step with blocking ditch portion (12).

3, high-strength engineering plastic pipe joint according to claim 2, it is characterized in that: the anchor ring (13) between stopper portions of described fittings body (11) and the hook part (12) is gone up by stopper portions one side and also is provided with a high-order step (14), by conical surface I (15) transition, described overcoat (5) ear end face is provided with cylinder I (53) corresponding with described high-order step (14) and conical surface I (15) and conical surface II (54) from outside to inside successively between described high-order step and the described anchor ring.

4, high-strength engineering plastic pipe joint according to claim 1, it is characterized in that: described cutting ferrule body ear end face (21) is provided with draw-in groove (22), described overcoat (5) front end is provided with the bulge loop (55) corresponding with described draw-in groove (22), and described bulge loop (55) closely is plugged in the draw-in groove (22) and hot melt connects.

5, according to claim 1,2,3 or 4 described high-strength engineering plastic pipe joints, it is characterized in that: described cutting ferrule body (2) also is provided with seal arrangement with outer inner room, described seal arrangement comprises and actively is installed on the seal ring (3) in the cutting ferrule body (2) and is installed on the interior back-up ring (4) of overcoat (5), described seal ring (3) front end is provided with the seal ring taper mouth of pipe (31), be provided with the conical surface (23) corresponding in the cutting ferrule body (2) with the seal ring taper mouth of pipe (31), the conical surface (23) rear portion on the cutting ferrule body (2) is the cylinder II (24) corresponding with the external annulus face of back-up ring (4), described seal ring (3) rear end apical grafting is at back-up ring (4) front end, the interior rear end of overcoat (5) is provided with back-up ring step (56), and back-up ring (4) rear end apical grafting is on back-up ring step (56).

6, high-strength engineering plastic pipe joint according to claim 5, it is characterized in that: described seal ring (3) rear end is provided with seal ring taper seam (32), described back-up ring (4) front end is provided with the back-up ring taper seam (41) corresponding with seal ring taper seam (32), and seal ring taper seam is plugged on the back-up ring taper seam.

7, high-strength engineering plastic pipe joint according to claim 5 is characterized in that: described back-up ring (4) rear end is fan-shaped ring wall (a 42) structure, and the small end of fan-shaped ring wall (43) apical grafting is on back-up ring step (56).

8, high-strength engineering plastic pipe joint according to claim 7, it is characterized in that: be provided with plurality of strengthening ribs (57) in the described overcoat (5), described stiffening rib (57) while, apical grafting was on the back-up ring ear end face (44) of fan-shaped relatively ring wall (42) opposite side on the back-up ring (4).

9, high-strength engineering plastic pipe joint according to claim 8, it is characterized in that: described stiffening rib (57) is symmetrically arranged two, described back-up ring ear end face (44) is provided with stopping projection (45), and described stopping projection (45) intercalation is between two stiffening ribs (57).