Crimping type pipe fitting sealing structure

Abstract

The utility model discloses a crimping type pipe fitting sealing structure, and relates to the technical field of crimping type pipe fitting sealing structures, the crimping type pipe fitting sealing structure comprises a pipeline, the pipeline comprises a steel pipe and a first trapezoidal ring, the outer wall of the steel pipe is sleeved with a joint assembly, and the joint assembly comprises an I-shaped pipe, a first rubber ring, a second trapezoidal ring and a second rubber ring. Through the arrangement of the first rubber ring, the second trapezoidal ring and the second rubber ring, when a steel pipe is subjected to compression joint through the joint assembly, the compression joint device extrudes the outer wall of the I-shaped pipe, the I-shaped pipe extrudes the first rubber ring, the first rubber ring and the second rubber ring can form a staggered fit shape in the moving process, and therefore the steel pipe is subjected to compression joint through the joint assembly. And the steel pipe and the inner wall of the I-shaped pipe are attached more tightly through the first trapezoidal ring and the second trapezoidal ring, and the sealing performance of the compression joint position of the steel pipe and the connector assembly is improved through attachment of the first trapezoidal ring and the second trapezoidal ring and attachment of the first rubber ring and the second rubber ring.

Description

Technical Field

[0001] The utility model relates to the technical field of compression-connection type pipe fitting sealing structures, in particular to a compression-connection type pipe fitting sealing structure. Background Art

[0002] With the development and progress of society, various pipelines are frequently used in life, construction, transportation and other industries. In the process of laying pipelines, due to the limited length of the pipelines and the need to add bending workpieces to change the laying angle according to actual conditions, it is necessary to seal the joints between pipelines and pipelines, and between pipelines and bending workpieces.

[0003] Most existing crimped pipes are crimped by fittings at the locations that require crimping, and then crimped using crimping pliers. Rubber rings are installed in the pipe fittings to allow sealing after crimping. However, steel pipes may bend during crimping, which may cause gaps in the sealing locations, leading to problems with poor sealing. Utility Model Content

[0004] The utility model aims to provide a crimping type pipe fitting sealing structure in order to solve the problem that a steel pipe may be bent during crimping so that a gap may appear at a sealing part, thereby causing a loose seal.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crimping type pipe fitting sealing structure, comprising a pipeline, wherein the pipeline comprises a steel pipe and a first trapezoidal ring;

[0006] The first trapezoidal ring is fixedly connected to the outer wall of the steel pipe, and the end surface of the first trapezoidal ring is flush with the plane of the steel pipe mouth;

[0007] The outer wall of the steel pipe is sleeved with a joint assembly, and the joint assembly includes an I-shaped pipe, a first rubber ring, a second trapezoidal ring, and a second rubber ring;

[0008] The I-shaped tube is sleeved on the outer wall of the steel tube, a plurality of first rubber rings are provided, and the plurality of first rubber rings are linearly glued and connected to the inner wall of the I-shaped tube, the second trapezoidal ring is fixedly connected to the inner wall of the I-shaped tube, and a plurality of second rubber rings are provided, and the plurality of second rubber rings are linearly glued and connected to the outer wall of the steel tube.

[0009] As a further solution of the utility model: the inner wall diameters at both ends of the I-shaped tube are larger than the inner wall diameter in the middle, and the inner wall diameter in the middle of the I-shaped tube is the same as the inner wall diameter of the steel tube.

[0010] As a further solution of the utility model: the first rubber ring is fixedly connected to the inner walls of both ends of the I-shaped tube in an inclined shape, and the distance from the joint between the first rubber ring and the inner wall of the I-shaped tube to the middle of the I-shaped tube is greater than the distance from the end of the first rubber ring away from the inner wall of the I-shaped tube to the middle of the I-shaped tube.

[0011] As a further solution of the utility model: the distance from the joint between the second rubber ring and the outer wall of the steel pipe to the first trapezoidal ring is smaller than the distance from the end of the second rubber ring away from the outer wall of the steel pipe to the first trapezoidal ring.

[0012] As a further solution of the utility model: the first rubber ring and the second rubber ring are parallel to each other, and the second trapezoidal ring inclined surface is parallel to the first trapezoidal ring inclined surface.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By arranging the first rubber ring, the second trapezoidal ring and the second rubber ring, when the steel pipe is crimped by the joint assembly, the crimping device squeezes the outer wall of the I-shaped tube, and the I-shaped tube squeezes the first rubber ring. The first rubber ring forms a staggered fit with the second rubber ring during the movement, and the first trapezoidal ring and the second trapezoidal ring make the steel pipe and the inner wall of the I-shaped tube fit more closely. The first trapezoidal ring and the second trapezoidal ring, and the first rubber ring and the second rubber ring fit together, so as to improve the sealing performance of the crimping point between the steel pipe and the joint assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of a steel pipe and a joint assembly of the utility model;

[0017] Figure 3 For the utility model Figure 2 Enlarged schematic diagram at point A in the middle.

[0018] In the figure: 1, pipeline; 101, steel pipe; 102, first trapezoidal ring; 2, joint assembly; 201, I-shaped pipe; 202, first rubber ring; 203, second trapezoidal ring; 204, second rubber ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 3 In an embodiment of the utility model, a crimping type pipe fitting sealing structure includes a pipe 1, the pipe 1 includes a steel pipe 101 and a first trapezoidal ring 102;

[0021] The first trapezoidal ring 102 is fixedly connected to the outer wall of the steel pipe 101, and the end surface of the first trapezoidal ring 102 is flush with the pipe opening plane of the steel pipe 101;

[0022] The outer wall of the steel pipe 101 is sleeved with a joint assembly 2, which includes an I-shaped pipe 201, a first rubber ring 202, a second trapezoidal ring 203, and a second rubber ring 204;

[0023] The I-shaped tube 201 is sleeved on the outer wall of the steel tube 101, a plurality of first rubber rings 202 are provided, and the plurality of first rubber rings 202 are linearly glued and connected to the inner wall of the I-shaped tube 201, the second trapezoidal ring 203 is fixedly connected to the inner wall of the I-shaped tube 201, and a plurality of second rubber rings 204 are provided, and the plurality of second rubber rings 204 are linearly glued and connected to the outer wall of the steel tube 101.

[0024] In this embodiment, when the pipeline 1 is crimped, the second rubber ring 204 is firstly linearly glued and connected to the outer wall of the steel pipe 101, and then the I-shaped tube 201 is sleeved on the outer wall of the steel pipe 101. Then, the sleeved part is crimped using a crimping device to shrink the I-shaped tube 201, thereby moving the first rubber ring 202 and the second trapezoidal ring 203 downward. The first rubber ring 202 on the inner wall of the I-shaped tube 201 forms a staggered fit with the second rubber ring 204 on the outer wall of the steel pipe 101 during the movement, and the steel pipe 101 and the inner wall of the I-shaped tube 102 are more closely fitted by the first trapezoidal ring 102 and the second trapezoidal ring 203, thereby improving the sealing of the crimping point between the steel pipe 101 and the joint assembly 2.

[0025] Please refer to Figures 1 to 3 The inner wall diameters at both ends of the I-shaped tube 201 are larger than the inner wall diameter in the middle, and the inner wall diameter in the middle of the I-shaped tube 201 is the same as the inner wall diameter of the steel tube 101.

[0026] In this embodiment, the inner wall diameters of the two ends of the I-shaped tube 201 are larger than the inner wall diameter of the middle part, and the inner wall diameter of the middle part of the I-shaped tube 201 is the same as the inner wall diameter of the steel tube 101, so that when the I-shaped tube 201 is sleeved on the outer wall of the steel tube 101, the first trapezoidal ring 102 and the second rubber ring 204 on the outer wall of the steel tube 101 can correspond to the second trapezoidal ring 203 and the first rubber ring 202 on the inner walls of the two ends of the I-shaped tube 201, respectively.

[0027] Please refer to Figure 2 , Figure 3 The first rubber ring 202 is fixedly connected to the inner walls of both ends of the I-shaped tube 201 in an inclined shape, and the distance from the joint between the first rubber ring 202 and the inner wall of the I-shaped tube 201 to the middle of the I-shaped tube 201 is greater than the distance from the end of the first rubber ring 202 away from the inner wall of the I-shaped tube 201 to the middle of the I-shaped tube 201.

[0028] In this embodiment, the distance from the point where the first rubber ring 202 is in contact with the inner wall of the I-shaped tube 201 to the middle of the I-shaped tube 201 is greater than the distance from the end of the first rubber ring 202 away from the inner wall of the I-shaped tube 201 to the middle of the I-shaped tube 201, so that when the I-shaped tube 201 is sleeved on the outer wall of the steel tube 101, it will not be affected by the first rubber ring 202, and the inclination direction of the first rubber ring 202 will not change to cause the first rubber ring 202 to fall off, etc., affecting the sealing performance of the crimping.

[0029] Please refer to Figure 2 , Figure 3 The distance from the second rubber ring 204 where it is attached to the outer wall of the steel pipe 101 to the first trapezoidal ring 102 is smaller than the distance from the end of the second rubber ring 204 away from the outer wall of the steel pipe 101 to the first trapezoidal ring 102 .

[0030] In this embodiment, the distance from the joint between the second rubber ring 204 and the outer wall of the steel pipe 101 to the first trapezoidal ring 102 is smaller than the distance from the end of the second rubber ring 204 away from the outer wall of the steel pipe 101 to the first trapezoidal ring 102, so that when the I-shaped tube 201 is sleeved on the outer wall of the steel pipe 101, it will not be affected by the second rubber ring 204, and the inclination direction of the second rubber ring 204 on the outer wall of the steel pipe 101 will not change, causing the second rubber ring 204 to fall off and affect the sealing of the crimping.

[0031] Please refer to Figure 2 , Figure 3 The first rubber ring 202 and the second rubber ring 204 are parallel to each other, and the inclined surface of the second trapezoidal ring 203 is parallel to the inclined surface of the first trapezoidal ring 102 .

[0032] In this embodiment: the first rubber ring 202 and the second rubber ring 204 are parallel to each other, so that when the I-shaped tube 201 is sleeved on the outer wall of the steel tube 101, the first rubber ring 202 on the inner wall of the I-shaped tube 201 and the second rubber ring 204 on the outer wall of the steel tube 101 can be staggered and connected, thereby improving the tightness of the connection between the first rubber ring 202 and the second rubber ring 204 when they are crimped. The inclined surface of the second trapezoidal ring 203 is parallel to the inclined surface of the first trapezoidal ring 102, so that when the I-shaped tube 201 is crimped, the second trapezoidal ring 203 will squeeze the first trapezoidal ring 102, so that the first trapezoidal ring 102 is close to both sides of the inner wall of the middle part of the I-shaped tube 201, providing a first layer of sealing for the crimped joint, and preventing the pipe 1 and the joint assembly 2 from moving and falling off easily after crimping.

[0033] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crimping type pipe sealing structure, comprising a pipe (1), characterized in that: The pipeline (1) comprises a steel pipe (101) and a first trapezoidal ring (102); The first trapezoidal ring (102) is fixedly connected to the outer wall of the steel pipe (101), and the end surface of the first trapezoidal ring (102) is flush with the plane of the pipe opening of the steel pipe (101); The outer wall of the steel pipe (101) is sleeved with a joint assembly (2), and the joint assembly (2) comprises an I-shaped pipe (201), a first rubber ring (202), a second trapezoidal ring (203), and a second rubber ring (204); The I-shaped tube (201) is sleeved on the outer wall of the steel tube (101); a plurality of the first rubber rings (202) are provided, and the plurality of the first rubber rings (202) are linearly glued and connected to the inner wall of the I-shaped tube (201); the second trapezoidal ring (203) is fixedly connected to the inner wall of the I-shaped tube (201); a plurality of the second rubber rings (204) are provided, and the plurality of the second rubber rings (204) are linearly glued and connected to the outer wall of the steel tube (101).

2. A crimping type pipe sealing structure according to claim 1, characterized in that: The diameter of the inner wall at both ends of the I-shaped tube (201) is larger than the diameter of the inner wall in the middle, and the diameter of the inner wall in the middle of the I-shaped tube (201) is the same as the diameter of the inner wall of the steel tube (101).

3. A crimping type pipe sealing structure according to claim 2, characterized in that: The first rubber ring (202) is fixedly connected to the inner walls of both ends of the I-shaped tube (201) in an inclined shape, and the distance from the point where the first rubber ring (202) and the inner wall of the I-shaped tube (201) are in contact with each other to the middle of the I-shaped tube (201) is greater than the distance from the end of the first rubber ring (202) away from the inner wall of the I-shaped tube (201) to the middle of the I-shaped tube (201).

4. A crimping type pipe fitting sealing structure according to claim 1, characterized in that: The distance from the point where the second rubber ring (204) is in contact with the outer wall of the steel pipe (101) to the first trapezoidal ring (102) is smaller than the distance from the end of the second rubber ring (204) away from the outer wall of the steel pipe (101) to the first trapezoidal ring (102).

5. A crimping type pipe sealing structure according to claim 1, characterized in that: The first rubber ring (202) and the second rubber ring (204) are parallel to each other, and the inclined surface of the second trapezoidal ring (203) is parallel to the inclined surface of the first trapezoidal ring (102).

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