The water heating pipe fittings linkage structure of belt material, casing threads compression seal
Technical field
The utility model relates to the water heating pipe fittings technical field, more particularly, relates to the water heating pipe fittings linkage structure of a kind of belt material, casing threads compression seal.
Background technique
Traditional water heating pipe fittings mainly adopts following five kinds of linkage structures to connect, and the first is welding, but adopts welding to carry out the attended operation difficulty, and technique is difficult to guarantee; The second is to be threaded, and seals by be coated with sealer, winding raw meal belt or other fibers at pipe fitting, and it is unreliable to seal; The third is the sealing of pegging graft, after two pipe fittings connects, the joint of two pipe fittings need to adopt the special tool cramping to produce mechanically deformation and realize that two pipe fittings fixes, special tool operation inconvenience, also easily destroy sealing, and be not easy to dismounting after two pipe fittings connects, can only destructive dismantle, the pipe fitting after the dismounting can not be reused; The 4th kind is that flange connects, and is not suitable for small-bore pipe fitting and connects, large with the space on the flange, is not easy to construction, and cost is high; The 5th kind is that FERRULETYPE connects, and cutting ferrule is soft attitude metal ring, produces the retrospective distortion under the screw thread extruding, the diameter of cutting ferrule diminishes and contacts the realization sealing with pipe fitting, and it is unreliable to seal, when installing in particular for hot water pipeline, because water temperature change to produce linear expansion, seal destroyedly, seepage appears.
The model utility content
The purpose of this utility model is to overcome defects of the prior art, a kind of need not fixing by special tool is provided, just can realize the pipe fitting axially locating, sealing is reliable, be convenient to repeatedly dismantle and keep in repair, and pipe fitting can be reused, and saves the belt material of cost, the water heating pipe fittings linkage structure of casing threads compression seal.
For achieving the above object, the technological scheme that the utility model provides is as follows: the water heating pipe fittings linkage structure that a kind of belt material, casing threads compression seal are provided, comprise the first pipe fitting, the second pipe fitting, described the first pipe fitting inserts in the second pipe fitting and is fixedly connected with by the screw thread compression seal device, this screw thread compression seal device be by with internal thread bushing pipe, external thread sleeve, the seal ring that is arranged between internal thread bushing pipe and the external thread sleeve consists of, the internal thread bushing pipe is threaded with external thread sleeve, described internal thread bushing pipe and the welding of the second pipe fitting inner wall or splicing.
Belt material described in the utility model, the beneficial effect of the water heating pipe fittings linkage structure of casing threads compression seal is: described the first pipe fitting inserts in the second pipe fitting and is fixedly connected with by the screw thread compression seal device, this screw thread compression seal device be by with the internal thread bushing pipe, external thread sleeve, the seal ring that is arranged between internal thread bushing pipe and the external thread sleeve consists of, the internal thread bushing pipe is threaded with external thread sleeve, the external thread sleeve compresses seal seals, sealing is reliable, realized simultaneously the first pipe fitting and the second pipe fitting are positioned, need not fix by special tool, just can realize the pipe fitting axially locating, connecting rear tubular member can not move axially, be convenient to repeatedly dismantle and keep in repair, and pipe fitting can be reused, and saves cost.
Be described further below in conjunction with the water heating pipe fittings linkage structure of drawings and Examples to belt material described in the utility model, casing threads compression seal.
Description of drawings
Fig. 1 is the structural representation of the water heating pipe fittings linkage structure of belt material described in the utility model, casing threads compression seal.
Embodiment
Below be the preferred example of the water heating pipe fittings linkage structure of belt material described in the utility model, casing threads compression seal, therefore do not limit protection domain of the present utility model.
With reference to Fig. 1, a kind of belt material is provided, the water heating pipe fittings linkage structure of casing threads compression seal, comprise the first pipe fitting 1, the second pipe fitting 2, described the first pipe fitting 1 and the second pipe fitting 2 are elbows, threeway, straight tube or reducer pipe, described the first pipe fitting 1 inserts in the second pipe fitting 2 and is fixedly connected with by screw thread compression seal device 3, this screw thread compression seal device 3 be by with internal thread bushing pipe 4, external thread sleeve 5, the seal ring 6 that is arranged between internal thread bushing pipe 4 and the external thread sleeve 5 consists of, internal thread bushing pipe 4 is threaded with external thread sleeve 5, described internal thread bushing pipe 4 and the welding of the second pipe fitting 2 inwalls or splicing, external thread sleeve 5 compresses seal 6 seal, sealing is reliable, realized simultaneously the first pipe fitting 1 and the second pipe fitting 2 are positioned, need not fix by special tool, just can realize the pipe fitting axially locating, connect rear tubular member and can not move axially, be convenient to repeatedly dismantle and keep in repair, and pipe fitting can be reused.
Water heating pipe fittings described in the utility model can be used on the various pipelines, and be particularly useful for solar thermal collector and import and export water nozzle, and on the pipeline between connection solar thermal collector and the water terminal.
Above-described embodiment is the better mode of execution of the utility model; but mode of execution of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.