CN2257346Y - Improved pipe connection - Google Patents

Abstract

The utility model relates to an improved pipe joint. Both ends of a connection pipe are sheathed with pipe sleeves; one end of each pipe sleeve is an inner conical part, and the other end of the pipe sleeve is convexly provided with a plurality of ear parts; a sleeve pipe passes through the ear parts by a screw bolt and is locked by a screw cap; a waterproof sealing sleeve which forms a conical shape and is provided with a connection seam is sheathed in the pipe sleeve, and both edges of the connection seam are respectively provided with a convex block and a groove. An O-shaped ring is sheathed between the waterproof sealing sleeve and a connection pipe; the convex block is clamped in the groove. When the waterproof sealing sleeve is sheathed and extruded, the connection seam of the waterproof sealing sleeve can not slip; the O-shaped ring is tightly pushed by the waterproof sealing sleeve, and the O-shaped ring has the functions of seal and leakage prevention.

Description

The pipe joint of improvement

The utility model relates to pipe joint, particularly the pipe joint of light instrument assembling connection pipe fitting.

Generally be used to carry the pipe joint of lower pressure, use the mode connecting pipeline of expander gummed mostly, because the building covers higher and higher at present, therefore in the time of will carrying higher hydraulic pressure, this kind expander gummed can't bear higher hydraulic pressure in the mode that connects water pipe, and the anxiety of breakaway is arranged in the joint of water pipe.

For solving the problem that high pressure is born in the pipe joint, pipe joint as Chinese patent 92206304.4 transformations, the joint two ends cover water receiving pipe that has screw thread on a surface, and the swivel nut that respectively is spirally connected at the two ends of joint, and between joint and swivel nut, be nested with a taper, and between taper and joint, be equiped with a drop-stopping ring, by this to connect the trombone slide road, yet this joint and swivel nut need car system outside thread and internal thread, can winding, trouble comparatively on manufacturing process, moreover, this kind must use pipe wrench to clamp joint and swivel nut with the joint of thread set water receiving pipe, can swivel joint and swivel nut so that its winding is got up, if when being used in the water pipe that connects larger caliber, employed relatively winding instrument also must strengthen thereupon, thereby during for the water pipe of winding larger caliber, be inconvenient to the winding of constructing because of the instrument that uses is heavy; In addition, in order to bear the taper of high hydraulic pressure, owing to be a taper, and offer many holes thereon, therefore, for asking easily manufactured, with a umbrella shape elastic strip body it is enclosed the coiled taper, owing to be a umbrella shape lamellar body, when circle coiled taper, one seam is promptly arranged on it, therefore, when being nested with when carrying out winding in swivel nut, this taper is owing to be extruded, seam on it can produce slippage and make this taper distortion, when taper is out of shape because of being extruded slippage, its end face can't suppress drop-stopping ring fully, only has partly by roof pressure, make drop-stopping ring can't bring into play the effect of stopping leak fully, as shown in Figure 5.

The purpose of this utility model is to provide a kind of improvement pipe joint of connecting tube, this pipe joint, no matter want the caliber size of winding pipe fitting, instrument construction winding that all can be lighter is to reduce the trouble of constructing.

For reaching the technological scheme of above-mentioned purpose, the utility model comprises connecting tube, pipe box, sealing big envelope, O type ring.The structure and the relevant position of each member are as follows:

One connecting tube is a body, and the appropriate location convexes with a stop ring in pipe;

More than one pipe box is nested with the two ends at connecting tube, becomes the interior tapering of taper in the end pipe of pipe box, convexes with a plurality of ears at the other end of pipe box, and sleeve pipe passes ear and sealed with a nut by bolt, with two relative pipe box windings.

One is nested with the sealing big envelope in pipe box, is one coniform, and offers a plurality of holes thereon, offers a joint close on the sealing big envelope, respectively is provided with projection and groove on the both sides of joint close, and this projection holding is in groove;

One O type ring is nested with between sealing big envelope and connecting tube.

The utility model has the advantages that:

1. be taper in the end pipe of sleeve pipe, the other end is provided with a plurality of ears, by the relative sleeve pipe of bolt and nut sealed two with the winding connecting tube, no matter want the pipe fitting caliber size of winding, all available lighter instrument construction winding, the trouble of constructing with minimizing.

2. be nested with the sealing big envelope in pipe box, be tapered tube shape, on the sealing big envelope, be provided with a joint close, the both sides of joint close respectively are provided with projection and groove, the projection holding makes the sealing big envelope when socket is pushed in groove, and the joint close of sealing big envelope can slippage, make the tight roof pressure O of sealing big envelope type ring, in case stopping leak leaks.

Below in conjunction with accompanying drawing structure of the present utility model and technical characteristics are described further.

Description of drawings:

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 is a sectional view of the present utility model.

Fig. 3 is a partial sectional view of the present utility model.

Fig. 4 is that sealing big envelope of the present utility model is implemented figure.

The schematic representation that Fig. 5 is squeezed and is out of shape for common taper.

At first, see also shown in Fig. 1,2, the utility model mainly is made of following each member, and details are as follows with the relevant position of each member and structure:

One connecting tube 1 is a body, and the appropriate location convexes with a stop ring 11 in pipe;

More than one pipe box 2, be nested with at the two ends of connecting tube 1, become the interior tapering 21 of taper in the end pipe of pipe box 2, convex with a plurality of ears 22 at the other end of pipe box 2, sleeve pipe 2 passes ear 22 and sealed with a nut 4 by bolt 3, with two relative pipe box 2 windings.

One sealing big envelope 5 is nested with the interior tapering 21 in pipe box 2, and sealing big envelope 5 is a tapered tube shape, and be provided with a plurality of holes 51 in the above, offer a joint close 52 on sealing big envelope 5, respectively be provided with projection 53 and groove 54 on the both sides of joint close 52, these projection 53 holdings are in groove 54;

One O type ring 6 is nested with between sealing big envelope 5 and connecting tube 1.

According to above structure, the utility model is when implementing, as Fig. 2, shown in 3, O type ring is placed in the pipe of connecting tube 1, then with the pipe fitting 7 that will connect, 7 ' be set in the pipe box 2, again sealing big envelope 5 is nested with at pipe fitting 7,7 ' an end, and it is set in the two ends of connecting tube 1, pass the ear 22 of pipe box 2 again with bolt 3, and with nut 4 with its locking, so, promptly to connect two pipe fittings 7,7 ', because the winding of pipe box 2 and connecting tube 1 is with pipe fitting 7,7 ' ways of connecting, system is passed the ear 22 of sleeve pipe 2 and is connected two pipe fittings 7 in the mode of nut 4 locking by bolt 3,76 ', with lighter instrument (as spanner) rotating bolt 3 or nut 4, and connect two pipe fittings 7 with ease of assembly, 7 ', if the bigbore pipe fitting 7 of winding, 7 ' also use light instrument to finish assembling connects, do not need common constitution must be with the change of bore the bigger and heavy pipe wrench of big replacing.

Moreover, because sealing big envelope 5 is a tapered tube shape, the both sides of the joint close 52 on sealing big envelope 5 respectively are provided with projection 53 and groove 54, this projection 53 is fastened in the groove 54, when sealing big envelope 5 is nested with in pipe box 2 and when lock bolt 3 or nut 4, sealing big envelope 5 is extruded, the bonding crack 52 on it is stuck in the groove 54 because of projection 53 is arranged, can be because of the extruding slippage, make sealing big envelope 5 prevent the effect of leaking so that tight roof pressure O type ring 6 performances are airtight.

Claims (1)

1. the pipe joint of an improvement comprises connecting tube, pipe box, sealing big envelope, O type ring, it is characterized in that:

One connecting tube is a body, and the appropriate location convexes with a stop ring in pipe;

More than one pipe box is nested with the two ends at connecting tube, becomes the interior tapering of taper in the end pipe of pipe box, convexes with a plurality of ears at the other end of pipe box, and sleeve pipe passes ear and sealed with a nut by bolt, with two relative pipe box windings,

One is nested with the sealing big envelope in pipe box, is one coniform, and offers a plurality of holes thereon, offers a joint close on the sealing big envelope, respectively is provided with projection and groove on the both sides of joint close, and this projection holding is in groove;

One O type ring is nested with between sealing big envelope and connecting tube.

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