CN200955643Y

CN200955643Y - Pipe piece with point clamping type end cap

Info

Publication number: CN200955643Y
Application number: CN 200620137966
Authority: CN
Inventors: 钱秀娥
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-29
Filing date: 2006-09-29
Publication date: 2007-10-03
Anticipated expiration: 2016-09-29

Abstract

The utility model relates to a tube having a point block-type end cover that is designed to solve the problem in that the end cover is hard to take off when closed relatively with the tube. The utility model is comprised of an end cover and a tube body; wherein, the hole surface of a through hole of the end cover is provided with an arch socket; the hole surface circumference outside the arch socket is evenly provided with at least three point-type clamps; the external cylindrical surface at the top of the tube is provided with a clamp jointing slot that is matched with the end cover point-type clamp. The utility model is applicable for the water supply tube of the cold-hot polypropylene tube or heat-resistant polyethylene tube as well as the tube connection in the purified water tube system in industry or civil construction.

Description

The pipe fitting of band point cassette end cap

Technical field

The utility model relates to a kind of tube connection piece, and is particularly a kind of with a pipe fitting of cassette end cap.

Background technique

Rise since on June 1st, 2000, country has forbidden that used for galvanized tube is since feedwater piping, polypropylene pipe (PP-R) and heat-proof polythene tubing (PE-RT) have become current topmost substitute products, these two kinds of tubing have unique hot molten characteristic, it is reliable and easy to connect that hot melt connects sealing, but supporting with it pipe fitting (link) has deficiency.After the pipe part of same material (PP-R or PE-RT) hot melt connects, because reflow process has excess stock to drain outward, outer excrement is exposed to the connection part of tubing 30 and pipe fitting 20 like the tumor 40 as shown in Figure 1, this is for the pipeline of bright dress, especially the house ornamentation water supply pipe has a strong impact on outward appearance.In order to cover this ugly tumor that exposes, there is the technician to design behind tubing, pipe fitting hot melt and adds end cap, its structure is: the projecting inward whole circle bar muscle in the hole of end cap, be provided with whole circle groove at tubular top external cylindrical surface corresponding site, when hot melt connects, earlier end cap is taken out from pipe fitting and be enclosed within on the tubing hot melt again, behind pipe hot melting, directly end cap is pressed against tubular top, whole circle bar muscle in the ending cover hole is stuck in the groove of pipe fitting, it is big that the rib of this structure end cap snaps in face, and the relative pipe fitting of end cap closes, and the back is very difficult takes out.In actual applications, end cap and pipe fitting lump together pairing and supply with the user, when needing repairing or reequip pipeline, all bring very big inconvenience for user and piping erection personnel.

The model utility content

For overcoming above-mentioned defective, the utility model purpose is to provide the pipe fitting of the band point cassette end cap that the relative pipe fitting of a kind of end cap can conveniently close and take out.

For achieving the above object, the pipe fitting of the utility model band point cassette end cap comprises end cap and pipe fitting, and the hole face in the described end cap poling hole is provided with circular groove, evenly is provided with at least three point type clamps on this circular groove apertura lateralis face circumference; Described pipe fitting top external cylindrical surface is provided with the buckling groove corresponding to end cap point type clamp.

Adopt the pipe fitting of the band point cassette end cap of said structure, during installation, be enclosed within end cap on the tubing earlier, with tubing with after the pipe fitting hot melt is connected, directly push end cap to pipe fitting,, pass buckling groove outside peak on the pipe fitting by the elastic stretch and the contraction of the circular groove on the end cap, make point type clamp on the end cap snap in the buckling groove of pipe fitting, covered the tumor that hot melt is discharged; When needing repairing, utilize the elastic stretch effect of circular groove once more, take out with the have gentle hands pine.

Description of drawings

Fig. 1 is the tubing and the pipe fitting connection diagram of prior art.

Fig. 2 a is an end cap cross-sectional schematic of the present utility model.

Fig. 2 b is the left view of Fig. 2 a.

Fig. 3 is a pipe fitting half section schematic representation of the present utility model.

Fig. 4 is the utility model embodiment's a half section assembling schematic representation.

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

Embodiment

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

Extremely shown in Figure 4 as Fig. 2 a, the pipe fitting of the utility model band point cassette end cap, comprise end cap 1 and pipe fitting 2 (Fig. 4), hole face in the end cap 1 poling hole 13 is provided with circular groove 11, and (Fig. 2 a), and on circular groove 11 apertura lateralis face circumference, evenly be provided with 3-8 screens point 14, it is spherical that each screens point 14 is provided with semicircle, the radius of a ball is the point type clamp 12 (radius is the spherical small salient point of the semicircle of SR1-SR3) of SR1-SR3, pipe fitting 2 top external cylindrical surfaces are provided with buckling groove 21 and screens face 26 (Fig. 3), successively with the point type clamp 12 of end cap 1, it is 14 corresponding that the screens of point type clamp is put; The end of the thermal fusing surface 24 of pipe fitting 2 also is provided with counterbore 22, and the intersection of counterbore 22 and thermal fusing surface 24 is fillet 23 transition, the ideal of excrement tumor 4 trend when being beneficial to hot melt.

Embodiment of the present utility model is referring to Fig. 4, Fig. 2 a and Fig. 3, the tubing 3 of same material (PP-R or PE-RT) and pipe fitting 2 are before hot melt, end cap 1 is enclosed within earlier on the tubing 3, the process special tool is respectively to the respective face of tubing 3 and its surface of thermal fusing surface 24 heat fused of pipe fitting 2, and then tubing 3 is inserted the thermal fusing surface 24 of pipe fitting 2 until hot melt confined planes 25, realized the hot melt connection, then, directly push end cap 1 to pipe fitting 2, elastic stretch by the circular groove on the end cap 1 11, pass buckling groove 21 outside peaks on the pipe fitting 2, make point type clamp 12 on the end cap 1 snap in the buckling groove 21 of pipe fitting 2, at this moment the point type clamp screens point 14 of end cap 1 pastes mutually with screens face 26 on the pipe fitting 2, thereby end cap 1 and pipe fitting 2 mutually combine, and has covered the tumor 4 that hot melt is discharged.

Another embodiment of the present utility model is referring to Fig. 5, because the end of the thermal fusing surface 24 of pipe fitting 2 is provided with counterbore 22, formed space is enough to contain the tumor 4 covering hot melt and discharge (because tubing 3 and pipe fitting 2 have melted a part when heating between this counterbore 22 and the tubing 3, and during hot melt, the partial melting thing squeezes inward, and tumor 4 volumes that actual hot melt is discharged only account for the 25%-45% of the total effluent volume of hot melt).

The pipe fitting of the utility model band point cassette end cap, be applicable to the cold and hot PP-R tubing of industry or civil building or the delivery (pipe) line of PE-RT tubing, pipeline in the purified water pipe-line system connects, especially for the connection of open piping, elegant in appearance, can remove of the influence of the tumor of hot melt discharge, and have great convenience for the user and maintenance or the repacking of installation personnel pipeline to the pipeline outward appearance.

Two embodiments of the present utility model have only listed the situation (for example the other end is threaded connection) of an end, also can be two ends (straight-through class pipe fittings, elbow class pipe fitting or middle threaded band silk tee pipe fitting), also can be three ends (threeway class pipe fittings), or four-way (four-way class pipe fitting) or the like, but the structure of every end all is analogous to the utility model structure.Under the situation that does not deviate from spirit of the present utility model and structural principle, the colleague technician can make the change or the distortion of physical dimension ratio or layout structure shape according to the utility model, and these change accordingly and be out of shape and all should belong in the scope that the utility model claim contained.

Claims

1, a kind ofly comprise end cap and pipe fitting with a pipe fitting of cassette end cap, it is characterized in that: the hole face in the described end cap poling hole is provided with circular groove, evenly is provided with at least three point type clamps on this circular groove apertura lateralis face circumference; Described pipe fitting top external cylindrical surface is provided with the buckling groove corresponding to end cap point type clamp.

2, according to the pipe fitting of the described band point cassette of claim 1 end cap, it is characterized in that: described point type clamp is the spherical small salient point of semicircle.

3, according to the pipe fitting of the described band point cassette of claim 1 end cap, it is characterized in that: the end of the thermal fusing surface of described pipe fitting is provided with counterbore.

4, according to the pipe fitting of the described band point cassette of claim 3 end cap, it is characterized in that: the counterbore of described pipe fitting and the intersection of thermal fusing surface are fillet.