Metal pipeline connecting piece with three locking rings

Abstract

The utility model relates to the technical field of pipeline connection, and provides a metal pipeline connecting piece with three locking rings, which comprises a connecting pipe fitting body and a pipe body, one end of the connecting pipe fitting body is provided with the three locking rings and a sealing bulge, the other end of the connecting pipe fitting body is provided with a limiting step, and the three locking rings are arranged on the limiting step. A sealing ring groove is formed in the pipe body, and an O-shaped sealing ring is arranged on the sealing ring groove in a sleeved mode. According to the utility model, the compression locking of the pipe fitting and the pipe fitting has stronger tensile and anti-falling performance and vibration resistance, so that the sealing performance of pipeline connection is improved, and the water resource loss caused by pipeline leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a metal pipeline connector with three locking rings. Background Art

[0002] At present, clamping connection, ring pressing connection, grooving connection, etc. are basically adopted in water supply, gas and fire-fighting pipeline systems. However, the connection between rigid pipes is not firm and is easy to fall off. The sealing parts are small in volume and easy to fall off and lose, and the sealing effect is not very good. When it comes to large-diameter pipeline systems, only connection methods such as welding and grooving can be used. The welding method requires highly professional technicians and a strong sense of responsibility to operate, and there are potential safety hazards such as fire in on-site construction. When using the grooving method, it is required to process grooves on the pipeline on-site. The groove depth, width, R angle and center line deviation must be strictly controlled with a vernier caliper. At the same time, the arc R angle of the groove opening shall not exceed the standard. Otherwise, the clamp will slip and cause water leakage or even fall off during later use. The quality of the groove opening is the key index for the success or failure of grooving connection. However, after installation, it is blocked by the clamp fittings, resulting in the inability to conduct in-depth inspection during completion acceptance, becoming a natural defect in the grooving connection that cannot be closed. Moreover, the connection efficiency and safety of this method for pipelines are not high. Content of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a metal pipeline connector with three locking rings.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: A metal pipeline connector with three locking rings, including a connecting pipe fitting body and a pipe body. One end of the connecting pipe fitting body is provided with three locking rings and a sealing protrusion. The other end of the connecting pipe fitting body is provided with a limiting step. The pipe body is provided with a sealing ring groove, and an O-ring is sleeved on the sealing ring groove.

[0005] As a further description of the above technical scheme:

[0006] The three locking rings are the first locking ring, the second locking ring and the third locking ring from left to right. Between the first locking ring and the second locking ring is a first sealing protrusion. Between the second locking ring and the third locking ring is a second sealing protrusion.

[0007] As a further description of the above technical scheme:

[0008] The connecting pipe fitting body can be straight-through, elbow-shaped or tee-shaped.

[0009] As a further description of the above technical scheme:

[0010] The sealing ring groove is correspondingly arranged with three locking rings.

[0011] As a further description of the above technical solution:

[0012] Sealing gaskets are filled inside the first sealing protrusion and the second sealing protrusion.

[0013] As a further description of the above technical solution:

[0014] The inner diameter of the connecting pipe fitting body is 0.3 mm to 1.5 mm larger than the outer diameter of the pipe body.

[0015] The utility model has the following beneficial effects:

[0016] 1. Through the cooperative setting of the three locking rings and the sealing protrusions, the pipe fittings are compressed and locked with stronger tensile anti - detachment performance and vibration resistance performance.

[0017] 2. Through the cooperative setting of the O - ring seal and the sealing gasket, the sealing performance of the pipeline connection is increased, and the water resource loss caused by pipeline leakage is reduced.

[0018] 3. It has a positive effect on improving the quality and efficiency of engineering installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a connection schematic diagram of a metal pipeline connector with three locking rings of the present utility model.

[0020] LEGEND DESCRIPTION:

[0021] 1. Connecting pipe fitting body; 2. Pipe body; 3. Limiting step; 4. O - ring seal; 5. First locking ring; 6. Second locking ring; 7. Third locking ring; 8. First sealing protrusion; 9. Second sealing protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Refer to Figure 1 As shown, a metal pipeline connector with three locking rings includes a connecting pipe fitting body 1 and a pipe body 2. One end of the connecting pipe fitting body 1 is provided with three locking rings and sealing protrusions, the other end of the connecting pipe fitting body 1 is provided with a limiting step 3, the pipe body 2 is provided with a sealing ring groove, and an O - ring seal 4 is sleeved on the sealing ring groove.

[0024] The three locking rings are, from left to right, the first locking ring 5, the second locking ring 6, and the third locking ring 7. Between the first locking ring 5 and the second locking ring 6 is a first sealing projection 8, and between the second locking ring 6 and the third locking ring 7 is a second sealing projection 9.

[0025] The connecting pipe fitting body 1 can be straight-through, elbow-shaped, or tee-shaped.

[0026] The sealing ring grooves are arranged corresponding to the three locking rings.

[0027] The first sealing projection 8 and the second sealing projection 9 are filled with gaskets.

[0028] The inner diameter of the connecting pipe fitting body 1 is 0.3 mm to 1.5 mm larger than the outer diameter of the pipe body 2.

[0029] The connection steps of the connecting pipe fitting body 1 and the pipe body 2:

[0030] a. Cut the pipe body 2 according to the usage requirements and polish the burrs at the cut.

[0031] c. Put the O-ring seal 4 that fits it on the cut pipe body 2, and fill the first sealing projection 8 and the second sealing projection 9 with gaskets that fit it, and then insert it into the connecting pipe fitting body 1.

[0032] d. Use a special crimping tool to crimp and shape the connection between the connecting pipe fitting body 1 and the pipe body 2 to lock it, and then it can be used.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A metal pipe connector with three locking rings, comprising a connecting pipe body (1) and a pipe body (2), characterized in that: One end of the connecting pipe body (1) is provided with three locking rings and a sealing protrusion, the other end of the connecting pipe body (1) is provided with a limiting step (3), the pipe body (2) is provided with a sealing ring groove, and the sealing ring groove is sleeved with an O-type sealing ring (4).

2. A metal pipe connector with three locking rings according to claim 1, characterized in that: The three locking rings are, from left to right, a first locking ring (5), a second locking ring (6) and a third locking ring (7); a first sealing protrusion (8) is provided between the first locking ring (5) and the second locking ring (6); and a second sealing protrusion (9) is provided between the second locking ring (6) and the third locking ring (7).

3. A metal pipe connector with three locking rings according to claim 1, characterized in that: The connecting pipe body (1) may be in a straight-through shape, an elbow shape, or a tee shape.

4. A metal pipe connector with three locking rings according to claim 1, characterized in that: The sealing ring groove is arranged correspondingly to the three locking rings.

5. The metal pipe connector with three locking rings according to claim 2, characterized in that: The first sealing protrusion (8) and the second sealing protrusion (9) are filled with sealing gaskets.

6. A metal pipe connector with three locking rings according to claim 1, characterized in that: The inner diameter of the connecting pipe body (1) is 0.3 mm to 1.5 mm larger than the outer diameter of the pipe body (2).

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