CN201028212Y

CN201028212Y - Pipe fitting with end cover

Info

Publication number: CN201028212Y
Application number: CNU2007200048256U
Authority: CN
Inventors: 郭德宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-09
Filing date: 2007-02-09
Publication date: 2008-02-27
Anticipated expiration: 2017-02-09

Abstract

The utility model discloses a pipe fitting with an end cover, which aims to solve the problem in the prior art, for example, the pipe fitting loosens or the end cover can not cover on the pipe fitting when the end cover pairs with the pipe fitting. The utility model comprises an end cover and a pipe fitting, the internal wall of a hot-melt-hole of one end of the pipe fitting is provided with a hot-melt surface, the end of which is provided with a limit surface, the top wall of the end cover is provided with a cellular orifice, at least two sections of tooth groups opposite to each other are arranged on a place on the interior top wall of the end cover and is near the fringe of the pipe-passing hole, and the at least two sections of tooth groups extend slantways towards the axis and protrude outside the fringe of the cellular orifice. The utility model is suitable for pipe connection of hot and cold water feed lines for industrial buildings and domestic buildings, pipes of pure water and pipes for solar energy pipe system.

Description

The pipe fitting of band edge lid

Technical field

The utility model relates to a kind of tube connection piece, particularly a kind of pipe fitting with band edge lid that the hot molten characteristic material makes.

Background technique

Random copolymerization polypropylene pipe (PP-R), heat-proof polythene tubing (PE-RT) and cold water polyvinyl piping materials (PE), it is the most general water-feeding pipes of current application, they all have unique hot molten characteristic, after these three kinds tubing and the pipe fitting of identical material were connected through hot melt separately, good airproof performance and connection were very easy.Yet reflow process has excess stock and drains outward, and these excrements are exposed to the connection part of tubing and pipe fitting, for the pipeline of bright dress, especially house ornamentation water supply pipe, have a strong impact on outward appearance, in order to cover this ugly excrement that exposes, pipe fitting often installs end cap additional in recent years.Connecting of prior art end cap and pipe fitting is to adopt to be threaded or the tongue and groove cassette is connected etc., since when end cap and pipe fitting molding and forming, the process parameter difference of foundation, and contractibility does not wait, the pairing size has variability, and end cap pitches when matching pipe fitting or do not cover phenomenon.

The model utility content

For overcoming above-mentioned defective, the utility model purpose is to provide a kind of pipe fitting of band edge lid, and is simple and convenient when utilizing end cap pairing pipe fitting, can not occur pitching or not covering phenomenon.

For achieving the above object, the pipe fitting of the utility model band edge lid, comprise end cap and pipe fitting, the hot melt hole inwall of this pipe fitting one end is provided with thermal fusing surface, end at thermal fusing surface is provided with confined planes, the roof of this end cap is provided with the poling hole, and described end cap inner roof wall is provided with at least two sections tooth groups relatively near the edge in poling hole, and these at least two sections tooth groups extend to the edge that protrudes the poling hole towards axis tilt.

Said structure is formed, because the edge in the close poling hole of end cap inner roof wall is provided with at least two sections tooth groups relatively, and these at least two sections tooth groups extend to the edge that protrudes the poling hole towards axis tilt, during installation, be enclosed within end cap on the tubing earlier, tubing is connected with the pipe fitting hot melt, the hot melt excrement is exposed to the connection part of tubing and pipe fitting, push end cap to pipe fitting this moment, end cap end face and pipe fitting end face are abutted together, by extend at least two sections tooth groups protruding the poling bore edges towards axis tilt, the card pipe that blocks the tubing outer peripheral surface mode of joining, make that end cap is relative with pipe fitting joins, both covered the ugly excrement that exposes, can not occur again pitching or not covering phenomenon.

Description of drawings

Fig. 1 is a pipe fitting half section schematic representation of the present utility model.

Fig. 2 is the sectional view of Fig. 1 at the left end position.

Fig. 3 is an end cap half section schematic representation of the present utility model.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is the utility model embodiment's a half section assembling schematic representation.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the pipe fitting of the utility model band edge lid, comprise end cap 1 and pipe fitting 2, hot melt hole 26 inwalls of these pipe fitting 2 one ends are provided with thermal fusing surface 21, end at thermal fusing surface 21 is provided with confined planes 22, the roof of this end cap 1 is provided with poling hole 12, is provided with at least two sections tooth groups 11 relatively at the edge in the close poling hole 12 of end cap 1 inner roof wall, and these at least two sections tooth groups 11 extend to the edge that protrudes poling hole 12 towards axis tilt.Its preferred structure is to be three sections with being arranged at end cap 1 inner roof wall uniform near the tooth group 11 at 12 edges, poling hole, the gear piece of every section tooth group 11 is 5-10, the tip of each gear piece obviously can be around its root elastics wing, and the most advanced and sophisticated formed inner hole surface size of each gear piece and the outside dimension of tubing 4 are suitable.Said structure is formed, because the edge in the close poling hole 12 of end cap 1 inner roof wall is provided with at least two sections tooth groups 11 relatively, and these at least two sections tooth groups 11 extend to the edge that protrudes poling hole 12 towards axis tilt, during installation, end cap 1 is enclosed within earlier on the tubing 4, utilize special tool tubing 4 one ends to be needed the outer peripheral surface of hot melt be connected with thermal fusing surface 21 hot melts of pipe fitting 2, hot melt excrement 3 is exposed to the connection part of tubing 4 and pipe fitting 2, push end cap 1 to pipe fitting 2 this moment, end cap end face 13 and pipe fitting end face 23 are abutted together, by extend at least two sections tooth groups 11 protruding 12 edges, poling hole towards axis tilt, the card pipe that the blocks tubing 4 outer peripheral surfaces mode of joining, make

end cap

1 and 2 relative joining of pipe fitting, both covered the ugly excrement that exposes 3, can not occur again pitching or not covering phenomenon.

As a kind of improvement of the present utility model, be provided with one or more stiffening rib 25 at the outer circumferential side of pipe fitting 2, its preferred structure be with stiffening rib 25 uniform be four; In addition, also be provided with one or more local stiffening rib 24 at the outer circumferential side of pipe fitting 2 tube heads and body connection part, its preferred structure be with local stiffening rib 24 uniform be four, the setting of staggering of this part stiffening rib 24 and stiffening rib 25; Even contraction in the time of so both can improving molding and forming has strengthened the intensity of pipe fitting again.

The pipe fitting of the utility model band edge lid is applicable to the cold and hot delivery (pipe) line of use of industry or civil building, the pipeline connection of purified water pipeline and solar energy pipeline system.Embodiment of the present utility model has only listed the situation of an end, also can be two ends (straight-through class pipe fitting or elbow class pipe fittings) in the practical application, also can be the isostructural pipe fittings of three ends (threeway class pipe fitting).

Claims

1. the pipe fitting of band edge lid, comprise end cap and pipe fitting, the hot melt hole inwall of this pipe fitting one end is provided with thermal fusing surface, end at thermal fusing surface is provided with confined planes, the roof of this end cap is provided with the poling hole, it is characterized in that: described end cap inner roof wall is provided with at least two sections tooth groups relatively near the edge in poling hole, and these at least two sections tooth groups extend to the edge that protrudes the poling hole towards axis tilt.

2. according to the pipe fitting of the described band edge of claim 1 lid, it is characterized in that: described to be arranged at the end cap inner roof wall uniform near the tooth group of poling bore edges be three sections.

3. according to the pipe fitting of claim 1 or 2 described band edge lids, it is characterized in that: the gear piece of described every section tooth group is 5-10.

4. according to the pipe fitting of the described band edge lid of claim 3, it is characterized in that: the most advanced and sophisticated formed inner hole surface size of described each gear piece and the outside dimension of tubing are suitable.

5. according to the pipe fitting of the described band edge lid of claim 1, it is characterized in that: the outer circumferential side of described pipe fitting is provided with the stiffening rib of one or more.

6. according to the pipe fitting of the described band edge of claim 5 lid, it is characterized in that: the described stiffening rib that is arranged at the pipe fitting outer circumferential side is uniform to be four.

7. according to the pipe fitting of the described band edge lid of claim 1, it is characterized in that: the outer circumferential side of described pipe fitting also is provided with the local stiffening rib of one or more.

8. according to the pipe fitting of the described band edge of claim 7 lid, it is characterized in that: the described local stiffening rib that is arranged at the pipe fitting outer circumferential side is uniform to be four, the setting of staggering of this part stiffening rib and stiffening rib.