CN2244126Y - Structure improved copper bend joint - Google Patents

Abstract

The utility model relates to a copper bent tube joint which comprises a copper bent tube seat, a plastic bent tube and an O-shaped ring, wherein, the water outlet port of the copper bent tube seat is a flange, and the other end of the copper bent tube seat is a turning inner tube; one end of the plastic bent tube is wrapped in a receiving concave surface between the flange of the copper bent tube seat and the turning inner tube, and is bent along with the turning inner tube; a circular groove is remained on the inner wall of the plastic bent tube and at the tube opening point of the turning inner tube, and the O-shaped ring is embedded in the circular groove; an externally connected plastic extension tube is directly arranged in the plastic bent tube, the end part of the plastic extension tube is abutted and bonded with the end part of the turning inner tube, and the O-shaped ring is positioned. The utility model has the advantages of convenient construction and installation and material saving. The utility model can effectively solve the problem of water leakage caused by the heat expansion and cold contraction factor for different materials.

Description

Improve the copper elbow of structure

The utility model relates to a kind of tube connector, relates to copper elbow structure or rather.

Elbow generally can be divided into plastic elbow and copper elbow, because this kind elbow one end and depotition cock join, the other end joins with the water inlet extension tube, if depotition cock cooperates with the thread of plastic elbow, insufficient strength then seems.In addition, leak, always make it during installation to screw in the tap as far as possible, tend to make the explosion of plastic bend tube joint because of overexerting for avoiding depotition cock.

For avoiding the generation of this phenomenon, industrial quarters makes improvements the plastic bend tube structure and makes as shown in Figure 1 elbow.Interior copper pipe B, the B ' that coats the band internal screw thread respectively of two mouth of pipe A1, A1 ' in that plastic bend tube A takes over makes to prevent to take over explosion when screwing in depotition cock or connecting tube.Yet because copper pipe B, B ' be two kinds of different materials with plastic bend tube A, in case when temperature variation is arranged,, leak unavoidably different the expanding with heat and contract with cold phenomenon and cause producing the space between the surface of contact of plastic bend tube A and copper pipe B, B ' of generation.In addition, the turnover A2 place of plastic bend tube A can not bear big hydraulic pressure and impact, if hydraulic pressure too Da Yi make water pipe produce the vibration dancing.

If all make elbow C with copper material, as shown in Figure 2, its two ends mouth of pipe C1, C1 ' (comprising the threeway mouth of pipe) must be provided with internal screw thread C11, C11 ' and can connect extension tube.If extension tube adopts plastic tube, then because of being that the body of unlike material can't directly connect, and must make intermediary, and then meet plastic tube E with Stainless Steel Tube D.At this moment, should go out E1 at mouth of pipe place expander earlier, and smear viscose glue at expander E1 inner edge and Stainless Steel Tube D outer rim place, it is bonding that both are nested with mutually, causes the inconvenience in the construction.

The purpose of this utility model is a kind of copper elbow that improves structure of design, but both convenient constructions can be saved the construction consumptive material again, also can effectively solve and leak.

The utility model adopts plastic material to coat the structure of copper material, and leak-stopping O type ring is established in the jointing place of two kinds of materials in elbow, makes plastic tube portion and the external plastics extension tube can be directly bonding mutually, and saves the connecting tube that is used for interlocking.

The utility model improves the copper elbow of structure, comprises bend pipe copper seat and plastic bend tube, it is characterized in that:

The waterexit end port of described bend pipe copper seat is provided with flange, is provided with internal screw thread in the flange, and the internal screw thread end extends pipe in the turnover, and there is the concave surface of holding the outer tube surface in the flange of bend pipe copper seat and its turnover between the pipe; Described plastic bend tube one end is positioned described holding in the concave surface, and the pipe place turnover in the turnover of bend pipe copper seat of the plastic bend tube the other end is extended, and leaves circular groove between the mouth of pipe of pipe in plastic bend tube inwall and the turnover of bend pipe copper seat; Also include O type ring, O type ring is embedded in the described circular groove, respectively the mouth of pipe outer wall place of pipe in the turnover of plastic bend tube inwall and bend pipe copper seat.

External plastics extension tube can directly be inserted in the plastic bend tube, its end against and be adhered to the turnover inner tube mouth of bend pipe copper seat and locate O type ring.

Further specify technology of the present utility model below in conjunction with embodiment's accompanying drawing

Fig. 1, existing plastic bend tube joint structure schematic representation

Fig. 2, existing copper elbow structure and scheme of installation

The elbow schematic representation of Fig. 3, this improvement structure

The threeway elbow schematic representation of Fig. 4, this improvement structure

The elbow user mode schematic representation of Fig. 5, this improvement structure

The threeway elbow user mode schematic representation of Fig. 6, this improvement structure

Address before Fig. 1, Fig. 2 illustrate, repeat no more.

Referring to Fig. 3, copper elbow is made of bend pipe copper seat 1 and plastic bend tube 15.The waterexit end port of bend pipe copper seat 1 is provided with flange 11, is provided with internal screw thread 12 in the flange 11, manages 13 in internal screw thread 12 terminal extensions in the turnover, and the outer surface in the turnover between pipe 13 and the flange 11 is formed with and holds concave surface 14, is used to locate plastic bend tube 15.By 11 plastic bend tubes 15 that extend a suitable size of pipe 13 and water outlet port flange in the turnover, and make between the mouth of pipe of the inwall of plastic bend tube 15 and the interior pipe 13 of transferring, keep a suitable circular groove 16,2 on O type ring embeds in this circular groove 16, and is resisted against the mouth of pipe 131 outer walls of pipe 13 in this plastic bend tube inwall and the turnover respectively.

Referring to Fig. 5, depotition cock 3 is locked in the waterexit end of bend pipe copper seat 1,15 mouths of pipe 131 that can directly supply plastics extension tube 4 to insert and lean pipe 13 in the turnover of plastic bend tube are bonding, on the one hand O type ring 2 is confined in the circular groove 16 forever, when elbow expanded with heat and contract with cold, O type ring 2 can prevent fluid permeability on the other hand.

Referring to Fig. 4, the bend pipe copper seat 1 of three-way pipe ', its waterexit end port be the band internal screw thread 12 ' flange 11 ', both sides that its turnover is extended then be pipe 13 in the turnover that is provided with respectively ', 13 "; and connect mutually; through holding concave surface 14 ' outside coat plastics after, plastic bend tube 15 ', 15 " inwall also pipe 13 respectively and in the turnover ', 13 " between keep a circular groove 16 ', 16 ", supply respectively two O type rings 2 ', in 2 " embed this circular groove 16 ', 16 " and packing locate.

Referring to Fig. 6, threeway bend pipe copper seat 1 " the waterexit end lock depotition cock 3 '; plastic bend tube 15 ', 15 " then supply respectively plastics extension tube 4 ', 4 " directly insert bonding; and lean pipe 13 in the turnover ', 13 " the mouth of pipe 131 ', 131 " are bonding, make O type ring 2 ', 2 " unlikelyly deviate from and the infiltration of anti-sealing.Not only convenient construction is installed, and also can reduce consumptive material and shorten man-hour.

Copper elbow of the present utility model is made of bend pipe copper seat, plastic bend tube and O type ring, convenience in the construction and installation not only is provided, has saved consumptive material, and can prevent fluid leaks and the characteristic of reinforcement plastic tube intensity be arranged, alternative complete elbow made of copper.

Claims (1)

1, a kind of copper elbow that improves structure comprises bend pipe copper seat and plastic bend tube, it is characterized in that:

The waterexit end port of described bend pipe copper seat is provided with flange, is provided with internal screw thread in the flange, and the internal screw thread end extends pipe in the turnover, and there is the concave surface of holding the outer tube surface in the flange of bend pipe copper seat and its turnover between the pipe; Described plastic bend tube one end is positioned described holding in the concave surface, and the pipe place turnover in the turnover of bend pipe copper seat of the plastic bend tube the other end is extended, and leaves circular groove between the mouth of pipe of pipe in plastic bend tube inwall and the turnover of bend pipe copper seat; Also include O type ring, O type ring is embedded in the described circular groove, respectively the mouth of pipe outer wall place of pipe in the turnover of plastic bend tube inwall and bend pipe copper seat.

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