CN2517949Y

CN2517949Y - Pipeline extension connector

Info

Publication number: CN2517949Y
Application number: CN 02223321
Authority: CN
Inventors: 罗德良
Original assignee: CHENHUI CHEMICAL BUILDING MATERIALS Co LTD XIANGTAN
Current assignee: CHENHUI CHEMICAL BUILDING MATERIALS Co LTD XIANGTAN
Priority date: 2002-01-20
Filing date: 2002-01-20
Publication date: 2002-10-23
Anticipated expiration: 2012-01-20

Abstract

The utility model discloses a pipeline telescopic connecting piece, which is mainly designed for solving the problem that the heat expansion and the cold contraction of the pipeline can easily lead the pipeline to bend or break off or the connecting piece to loosen. The utility model comprises two locking glands (2) arranged on the two ends with threads (5), a sealing ring (3) sleeved on a connecting end of a connected pipe (12), and a washer, the sealing ring (3) and a washer (4) are sleeved inside the inner cavities of the two ends of a pipeline connecting piece main body (1), the pipeline (12)respectively passes through a pipe hole in the middle of the locking gland, the inner cavities of the two ends of the pipeline connecting main body (1), and the sealing ring (3) reaching the inner part in the middle of the pipeline connecting piece. In the operation state of the utility model, the pipeline which is fixed and connected can slide in a fluid sealing way and can be telescopic inside the inner cavity of the pipeline connecting piece (1), thereby the affection of the pipeline from temperature change such as the pipeline connecting piece is pulled off or loosened due to the heat expansion and the cold contraction can be avoided, and the fluid sealing connection of the pipeline is always ensured.

Description

The pipeline link that stretches

Technical field: the utility model relates to a kind of pipe connector, particularly a kind of pipeline that can stretch under liquid sealing state link that stretches.

Background technique: at present, normally used pipe connector just cooperates with nut, seal ring, trim ring and link and forms.Quick pipe connecting piece (the number of patent application of applying for a patent on April 7th, 1993 as the Guo Xinjing of Zhengzhou City, West Road, Central Plains road, Zhengzhou City, Henan Province water utility: 93208793, the authorization day for announcing: 94.3.2, authorize day: 94.1.23, notice of authorization day: 94.3.2), it is to have externally threaded pipe connector body by two ends, have internal thread locking end cap, the seal ring that is placed between pipe connector body and the end cap is formed.Have to the greatest extent install fast and convenient, labor intensity is low, be convenient to advantages such as maintenance, good airproof performance, but it is fixedly connected, there is not telescopic space, though can reach the effect that liquid sealing connects, but in use,, pipeline is expanded with heat and contract with cold because of being subjected to the influence of nature temperature change, pipe connector is easily crooked or drawn back or loosening, causes adverse consequences such as leak.

Summary of the invention: the purpose of this utility model is to provide a kind of pipeline that makes to become the flexible link of the flexible pipeline of liquid sealing under user mode.The purpose of this utility model is achieved through the following technical solutions: pipe connector body 1 is cylindric, the two ends intracavity diameter that is provided with outside thread 5 is greater than the middle part internal diameter, match with institute adapter road 12 in pipe connector body 1 middle part, its internal diameter is more than or equal to the external diameter of connecting tube 12, central authorities are provided with locking pressure cap 2 engage sleeves that the pore that matches with institute adapter road 12 and connecting end be provided with internal thread 9 and are contained on the two ends outside thread 5 of pipe connector body 1, the outside thread 5 at pipe connector body 1 two ends is meshed with the internal thread 9 of locking pressure cap 2, the seal ring 3 that is sleeved on the connecting end in institute adapter road 12 is sleeved in the inner chamber at pipe connector body 1 two ends, the outer wall of seal ring 3 matches with cavity wall in this part of pipe connector 1 two ends, seal ring 3 inwalls match with the outer wall in institute adapter road 12, and institute adapter road 12 passes the pore of locking pressure cap 2 central authorities respectively, the two ends inner chamber of pipe connector body 1 and seal ring 3 arrive pipe connector middle part inner chamber.Pipe connector body 1 two ends intracavity bottom and inner chamber connecting part, middle part are the conical surface, and the front end of tubular seal ring 3 is established the conical surface that matches with the pipe connector body 1 two ends intracavity bottom conical surface.The inwall of seal ring 3 is provided with 2-6 road arcuation bulge loop.The friction that produces when stretching in order to reduce is established on the inwall of seal ring 3 and is only established twice arcuation bulge loop, be i.e. front end bulge loop 10 and rear end bulge loop 11.The inner affixed internal diameter of the central pore parcel identical with central pore internal diameter of locking pressure cap 2 taken over 12 hold out against and encircle 8, holds out against to encircle the internal diameter that 8 external diameter is less than or equal to pipe connector body 1 two ends inner chamber.In the inner chamber of the two ends of pipe connector body 1, suit packing ring 4 between seal ring 3 and locking pressure cap 2.The utility model is under user mode, the pipeline that connects can become liquid sealing to slide elastically in the inner chamber of pipe connector body 1, thereby solved pipeline because of problems such as expanded with heat and contract with cold by the nature temperature change to make easily pipe bending or pipeline and broken or pipe connector is loosening, ensured that pipeline remains liquid sealing and connects.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sectional structure schematic representation of pipe connector body 1;

Fig. 3 is the vertical profile structural representation of Fig. 2;

Fig. 4 is the structural representation of locking pressure cap 2;

Fig. 5 is the projection structure schematic representation of Fig. 4;

Fig. 6 is the structural representation of seal ring 3;

Fig. 7 is the structural representation of packing ring 4.

Embodiment:

Embodiment: as can be known by Fig. 1 to 7, pipe connector body of the present utility model 1 is cylindric for what match with institute adapter road, to be provided with the two ends intracavity diameter of outside thread 5 greater than the middle part internal diameter, so that can be on the outer wall in institute adapter road suit seal ring 3 and packing ring 4, institute adapter road 12 matches with pipe connector body 1 middle part, the middle part internal diameter of pipe connector body 1 is taken over road 12 with toilet and can be inserted the middle part inner chamber of through pipe connector body 1 from the two ends of pipe connector body 1 more than or equal to the external diameter in institute adapter road 12; Central authorities are provided with locking pressure cap 2 engage sleeves that the pore that matches with institute adapter road 12 and connecting end be provided with internal thread 9 and are contained on the two ends outside thread 5 of pipe connector body 1, the outside thread 5 at pipe connector body 1 two ends is meshed with the internal thread 9 of locking pressure cap 2, the seal ring 3 that is sleeved on the connecting end in institute adapter road 12 is sleeved in the inner chamber at pipe connector body 1 two ends, the outer wall of seal ring 3 matches with cavity wall in this part of pipe connector 1 two ends, seal ring 3 inwalls match with the outer wall in institute adapter road 12, and institute adapter road 12 passes the pore of locking pressure cap 2 central authorities respectively, the two ends inner chamber of pipe connector body 1 and seal ring 3 arrive pipe connector middle part inner chamber.

Tightr in order to cooperate, make the conical surface at pipe connector body 1 two ends intracavity bottom and inner chamber connecting part, middle part, the front end of tubular seal ring 3 is also corresponding makes the conical surface that matches with the pipe connector body 1 two ends intracavity bottom conical surface, thereby reaches better sealing effect.

As shown in Figure 6, for institute adapter road 12 can be stretched under the liquid sealing state, and in order to reduce the surface friction drag between seal ring and the institute adapter road, the special 2-6 road arcuation bulge loop that on the inwall of seal ring 3, is provided with, the inwall of a seal ring bulge loop inwall and institute adapter road join, reduce friction area, thereby both reached sealing effect, reduced resistance again.The friction that produces when the adapter road is flexible in order to make is littler, establishes on the inwall of seal ring 3 and only establishes twice arcuation bulge loop, be i.e. front end bulge loop 10 and rear end bulge loop 11.In the inner chamber of the two ends of pipe connector body 1, suit packing ring 4 between seal ring 3 and locking pressure cap 2.

As shown in Figure 2, the inner affixed internal diameter of the central pore parcel identical with central pore internal diameter of locking pressure cap 2 taken over 12 hold out against and encircle 8, the external diameter that holds out against ring 8 is less than or equal to the internal diameter of pipe connector body 1 two ends inner chamber, it mainly is the effect of top lifting pressure seal ring 3 that this inwardly protruding holds out against ring 8, make the inwall and institute's 12 one-tenth liquid sealings cooperations in adapter road of seal ring 3, its outer wall becomes liquid sealing to cooperate with the interior cavity wall at pipe connector body 1 two ends.

More convenient to operate in order to install, many pipe connector body convex tendons 6 and locking pressure cap convex tendon 7 or the grid that increases friction is set respectively on the outer wall of pipe connector body 1 and locking pressure cap 2, thereby increases frictional force so that fitting operation.

In installing and using process, because the utility model is to be used for two connections between the tubing, solve the flexible problem expand with heat and contract with cold, so two tubing ends should maintain a certain distance when installing.For example: when 20 ℃ of weathers, its spacing is 30mm; When weather rises 1 ℃ the time, tubing extends to 0.06mm for every meter in pipe connector body 1, can install and notes keeping the utility model in symmetrical position with reference to above-mentioned parameter during user installation.The front end in the institute adapter road 12 that is connected with the utility model will fall into fillet (R ₃), scratch pipe connector or hurt sb.'s feelings with the sharp corners of avoiding pipe joint.Before connecting, locking pressure cap 2 must clean up with the connecting part in institute adapter road 12, does not leave particle foreign material and dirt bits.When institute adapter road 12 and the utility model connection, pretightening force must be grasped according to the working pressure size, suitably in use, leaks as if finding with water-tight, can suitably tighten locking pressure cap 2 adjustment pretightening forces again.

The utility model is under user mode, the pipeline that connects can become liquid sealing to slide elastically in the inner chamber of pipe connector body 1, thereby solved pipeline because of problems such as expanded with heat and contract with cold by the nature temperature change to make easily pipe bending or pipeline and broken or pipe connector is loosening, and can ensure that pipeline remains liquid sealing and connects, install very convenient.

Claims

1, a kind of pipeline link that stretches, it is characterized in that: pipe connector body [1] is cylindric, the two ends intracavity diameter that is provided with outside thread [5] is greater than the middle part internal diameter, match with institute adapter road [12] in pipe connector body [1] middle part, its internal diameter is more than or equal to the external diameter of connecting tube [12], central authorities are provided with locking pressure cap [2] engage sleeves that the pore that matches with institute adapter road [12] and connecting end be provided with internal thread [9] and are contained on the two ends outside thread [5] of pipe connector body [1], the outside thread [5] at pipe connector body [1] two ends is meshed with the internal thread [9] of locking pressure cap [2], the seal ring [3] that is sleeved on the connecting end of institute adapter road [12] is sleeved in the inner chamber at pipe connector body [1] two ends, the outer wall of seal ring [3] matches with cavity wall in this part of pipe connector [1] two ends, seal ring [3] inwall matches with the outer wall of institute adapter road [12], and institute adapter road [12] passes the pore of locking pressure cap [2] central authorities respectively, the two ends inner chamber of pipe connector body [1] and seal ring [3] arrive pipe connector middle part inner chamber.

2, according to the flexible link of the described pipeline of claim 1, it is characterized in that: pipe connector body [1] two ends intracavity bottom and inner chamber connecting part, middle part are the conical surface, and the front end of tubular seal ring [3] is established the conical surface that matches with pipe connector body [1] the two ends intracavity bottom conical surface.

3, according to the flexible link of the described pipeline of claim 1, it is characterized in that: the inwall of seal ring [3] is provided with 2-6 road arcuation bulge loop.

4, according to the flexible link of the described pipeline of claim 3, it is characterized in that: establish front end bulge loop [10] and rear end bulge loop [11] on the inwall of seal ring [3].

5, according to the flexible link of the described pipeline of claim 1, it is characterized in that: what the inner affixed internal diameter of the central pore of locking pressure cap [2] parcel identical with central pore internal diameter taken over [12] holds out against ring [8], and the external diameter that holds out against ring [8] is less than or equal to the internal diameter of pipe connector body [1] two ends inner chamber.

6, according to claim 1 or the flexible link of 2 or 3 or 4 or 5 described pipelines, it is characterized in that: in the two ends inner chamber of pipe connector body [1], suit packing ring [4] between seal ring [3] and locking pressure cap [2].