Waterway pipeline connecting structure

Abstract

The utility model relates to a waterway pipeline connecting structure which comprises a first pipeline, a second pipeline, a sealing piece and a hoop. A first connecting end is arranged at one end of the first pipeline in the extending direction; a second connecting end is arranged at one end, in the extending direction, of the second pipeline, and the second connecting end is inserted into the first connecting end; the outer wall of the second connecting end protrudes to form at least two sets of protruding parts, the protruding parts are arranged in the axis direction of the second pipeline and all surround the periphery of the second connecting end, and a containing groove is formed by a gap between the at least two sets of adjacent protruding parts in the axis direction. The sealing piece is located in the containing groove and is in interference fit with the inner wall of the first connecting end. The hoop is arranged outside the joint of the first pipeline and the second pipeline in a sleeving manner; the device is simple to mount and dismount and convenient for subsequent maintenance; both pipelines with the same diameter and pipelines with different diameters can be connected, and the type selection range is wide; the leakage hidden danger of welding can be avoided, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection structures, and in particular to a water pipeline connection structure. Background Art

[0002] The internal water circuit of a large central air-conditioning water machine is complexly arranged, and the number of inlet and outlet water pipes and connecting valve parts is large. It is necessary to design a pipeline connection structure that is convenient for disassembly and maintenance within a limited space. The existing copper pipes inside air conditioners are usually connected by welding, threaded connection, and insertion of brass parts, etc. It is difficult to disassemble and inconvenient to maintain. Both the welding process and the brass parts themselves have relatively high production costs. In addition, the welded joints are prone to leakage after welding, posing a safety hazard. Content of the Utility Model

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the technical difficulties in the prior art that the internal pipeline connection structure of the air conditioner is inconvenient for disassembly and maintenance and has a leakage risk, and to provide a water pipeline connection structure that is convenient for assembly and disassembly and reduces the maintenance cost.

[0004] To solve the above technical problem, the utility model provides a water pipeline connection structure, which includes,

[0005] A first pipeline, one end of the first pipeline in the extending direction is set as a first connection end;

[0006] A second pipeline, one end of the second pipeline in the extending direction is set as a second connection end, and the second connection end is inserted into the inside of the first connection end; at least two groups of convex parts are formed on the outer wall of the second connection end, the convex parts are arranged along the axial direction of the second pipeline and are all arranged around the outer circumference of the second connection end, and the gaps between at least two groups of adjacent convex parts in the axial direction form a receiving groove;

[0007] A sealing member, which is located in the receiving groove and is in interference fit with the inner wall of the first connection end;

[0008] A clamp, which is sleeved outside the connection part of the first pipeline and the second pipeline.

[0009] In an embodiment of the utility model, the convex part includes a first convex part, a second convex part, and a third convex part arranged in sequence, and the third convex part is located at the port part of the second connection end in the axial direction; the first convex part is closely arranged with the second convex part, and the receiving groove is formed between the second convex part and the third convex part.

[0010] In an embodiment of the utility model, the first convex part, the second convex part, and the third convex part all protrude outward along the radial direction of the second pipeline, and the outer diameters of the convex parts are all equal.

[0011] In an embodiment of the present utility model, the outer diameter of the convex portion is smaller than the inner diameter of the first connection end, and the radial clearance width between the convex portion and the inner wall of the first connection end is 0.05 mm.

[0012] In an embodiment of the present utility model, the first pipeline further includes a pipeline main body and a limiting portion; the diameter of the pipeline main body is equal to the inner diameter of the first connection end, the limiting portion and the second connection end are plugged into and abutted against the end of the first connection end, and the limiting portion protrudes radially inward from the inner wall of the first pipeline.

[0013] In an embodiment of the present utility model, the first pipeline further includes a pipeline main body and a limiting portion; the diameter of the pipeline main body is smaller than the inner diameter of the first connection end, the limiting portion is arranged as a conical surface and is plugged into and abutted against the end of the second connection end in the first connection end, and one end of the generatrix direction of the conical surface is connected to the first connection end, and the other end is connected to the pipeline main body.

[0014] In an embodiment of the present utility model, the clamp includes a first fastening portion and a second fastening portion connected in sequence along the axial direction; the first fastening portion includes two groups of first clamping plates symmetrically arranged on both sides of the first connection end, and the first clamping plates have a first arc section similar in shape to the first connection end; the second fastening portion includes two groups of second clamping plates symmetrically arranged on both sides of the second connection end, and the second clamping plates have a second arc section similar in shape to the second connection end.

[0015] In an embodiment of the present utility model, one end of the first fastener is connected to the second fastener, and the other end forms an opening; there is a gap between the first fastener and the second fastener in the axial direction for avoiding the flange of the first connection end.

[0016] In an embodiment of the present utility model, the first fastener limits the flange in the axial direction, and the second fastener limits the first convex portion of the second pipeline in the axial direction.

[0017] In an embodiment of the present utility model, the sealing member is arranged as an O-ring seal, and the interference amount of the sealing member in the radial direction is 0.1 mm.

[0018] The above technical solution of the present utility model has the following beneficial effects compared with the prior art:

[0019] The water pipeline connection structure described in the present utility model is simple and quick to install and disassemble, facilitating subsequent maintenance; it can connect both pipelines with the same diameter and pipelines with different diameters, with a wide selection range and strong flexibility; to implement this connection structure, only pier edges or flaring are required, avoiding the high costs and leakage risks brought by welding processes, and having higher reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments of the present utility model in conjunction with the drawings, where:

[0021] Figure 1 is a schematic diagram of the water pipeline connection structure in Embodiment 1 of the present utility model;

[0022] Figure 2 is Figure 1 the front view of the shown structure;

[0023] Figure 3 is Figure 1 the sectional view of the shown structure;

[0024] Figure 4 is the front view of the second pipeline without assembled seals in Embodiment 1 of the present utility model;

[0025] Figure 5 is the front view of the second pipeline with assembled seals in Embodiment 1 of the present utility model;

[0026] Figure 6 is Figure 5 the sectional view of the shown structure;

[0027] Figure 7 is the front view of the first pipeline in Embodiment 1 of the present utility model;

[0028] Figure 8 is Figure 7 the sectional view of the shown structure;

[0029] Figure 9 is a schematic diagram of the water pipeline connection structure in Embodiment 2 of the present utility model;

[0030] Figure 10 is Figure 9 the front view of the shown structure;

[0031] Figure 11 is Figure 9 the sectional view of the shown structure;

[0032] Figure 12 is the front view of the first pipeline in Embodiment 2 of the present utility model;

[0033] Figure 13This is a schematic structural diagram of the clamp in the preferred embodiment of the present utility model.

[0034] Explanation of reference numerals in the drawings of the specification: 1. First pipeline; 11. First connection end; 1101. Flange; 12. Pipeline main body; 2. Second pipeline; 21. Second connection end; 3. Sealing member; 4. Clamp; 41. First fastener; 42. Second fastener; 51. First convex portion; 52. Second convex portion; 53. Third convex portion; 54. Accommodation groove; 6. Limiting portion; 71. First arc segment; 72. Second arc segment; 73. Closing segment; 74. Opening segment. Detailed implementation manners

[0035] The present utility model will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the specific embodiments cited shall not be used as a limitation to the present utility model.

[0036] Embodiment 1

[0037] Refer to Figures 1 to 8 As shown, the present utility model provides a water pipeline connection structure, and the water pipeline structure includes a first pipeline 1 and a second pipeline 2, a sealing member 3 and a clamp 4 that are connected to each other; the water pipeline connection structure is easy to assemble and disassemble, has a lower cost and higher safety performance; has lower requirements for the pipe diameters of the two side connection pipelines and a wider application range.

[0038] Specifically, refer to Figure 1 and Figure 2 As shown, one end in the extending direction of the first pipeline 1 is provided as a first connection end 11; one end in the extending direction of the second pipeline 2 is provided as a second connection end 21, and the second connection end 21 is inserted into the inside of the first connection end 11, thereby realizing the connection between the first pipeline 1 and the second pipeline 2.

[0039] Specifically, at least two groups of convex portions are formed on the outer wall of the second connection end 21, the convex portions are arranged along the axial direction of the second pipeline 2 and are all arranged around the outer periphery of the second connection end 21, and the gaps between at least two groups of adjacent convex portions in the axial direction form an accommodation groove 54, the groove wall of the accommodation groove 54 is set as the surfaces of the second convex portion 52 and the third convex portion 53 that are oppositely arranged in the axial direction, the bottom wall of the accommodation groove 54 is set as the outer wall of the main body of the second connection end 21, and the accommodation groove 54 is used to place the sealing member 3 to form a seal at the pipeline connection, preferably, the sealing member 3 is set as an O-ring.

[0040] Further, refer to Figure 4As shown, in the first embodiment of the present utility model, the convex parts are preferably arranged in three groups, including a first convex part 51, a second convex part 52, and a third convex part 53 arranged in sequence along the axis direction of the second connection end 21. Among them, the third convex part 53 is closer to the first connection end 11 than the first convex part 51, and the third convex part 53 is located at the port part of the second connection end 21 in the axis direction. The first convex part 51 and the second convex part 52 are arranged closely, and an accommodation groove 54 is formed between the second convex part 52 and the third convex part 53.

[0041] Further, referring to Figure 6 As shown, the outer diameters of the first convex part 51, the second convex part 52, and the third convex part 53 are equal, avoiding that the outer diameter of a certain convex part is too large to hinder the insertion of the second connection end 21, or the outer diameter is too small to have a supporting effect and the force on each convex part is uneven. Further, the first convex part 51, the second convex part 52, and the third convex part 53 all protrude outward along the radial direction of the second pipeline 2, so that the plane where the convex part is located is perpendicular to the insertion direction.

[0042] Specifically, the outer diameters of the first convex part 51, the second convex part 52, and the third convex part 53 are all smaller than the inner diameter of the first connection end 11, facilitating the insertion of the second connection end 21 into the first connection end 11; the sealing member 3 is in interference fit with the inner wall of the first connection end 11 to fill the radial gap between the first connection end 11 and the second connection end 21 to achieve sealing. Preferably, in the first embodiment of the present utility model, referring to Figure 6 and Figure 8 As shown, the outer diameter of the convex part is d1, the outer diameter of the sealing member 3 is d2, and the inner diameter of the first connection end 11 is d3; d1, d2, and d3 are all assembly dimensions. Among them,

[0043] d1 = d3 - 0.1;

[0044] The difference between the outer diameter of the convex part and the inner diameter of the first connection end 11 is 0.1 mm, and the width of the radial gap between the convex part and the inner wall of the first connection end 11 is 0.05 mm, providing space for the assembly of the second connection end 21.

[0045] d2 = d3 + 0.2;

[0046] The difference between the outer diameter of the sealing member 3 and the inner diameter of the first connection end 11 is 0.2 mm, and the interference amount of the sealing member 3 in the radial direction is 0.1 mm, avoiding water leakage at the pipeline connection.

[0047] Specifically, the clearance width between the seal 3 and the two side walls of the receiving groove 54 in the axial direction is 0.5 mm; when the model of the seal 3 is determined, the groove width of the receiving groove 54 is also determined accordingly. Refer to Figure 6 As shown, the region between the first convex portion 51 and the third convex portion 53 of the second connection end 21 in the axial direction is inserted into the first connection end 11, and the insertion depth is L. When the groove width of the receiving groove 54 is determined, L is related to the axial width of the convex portion. It should be noted that in the preferred embodiment of the present invention, the first convex portion 51, the second convex portion 52, and the third convex portion 53 are all provided as pipe wall beadings, which are formed by extrusion with a beading die. When the wall material thickness of the second pipe 2 is set to a, the axial width of the convex portion is the smallest when the beading is completely pressed by the die. At this time, the axial width m of each group of convex portions is 2a; when controlling the die stroke during beading, a hollow space is reserved inside the convex portion, and the axial width of the convex portion can be controlled to be larger when it is not completely pressed, m > 2a, so as to adjust the insertion depth L of the pipe to meet the requirements of different pipe connections.

[0048] Specifically, refer to Figure 3 As shown, the first pipe 1 further includes a pipe body 12 and a limiting portion 6; the limiting portion 6 is located inside the first pipe 1; the position of the limiting portion 6 inside the first pipe 1 is determined according to the insertion depth L, and the limiting portion 6 is located on one side of the third convex portion 53 for limiting.

[0049] Furthermore, in the first embodiment of the present invention, refer to Figure 3 As shown, the inner diameter of the first pipe 1 is larger than the inner diameter of the second pipe 2, the pipe diameter of the pipe body 12 is equal to the inner diameter of the first connection end 11, the limiting portion 6 protrudes radially inward from the inner wall of the first pipe 1, and the limiting portion 6 is provided as a dotting protrusion.

[0050] Specifically, refer to Figure 12As shown, the clamp 4 is sleeved outside the connection of the first pipeline 1 and the second pipeline 2. The clamp 4 includes a first fastening part and a second fastening part connected in sequence along the axial direction; the first fastening part includes two groups of first clamping plates symmetrically arranged on both sides of the first connection end 11. The first clamping plate includes a first arc segment 71 similar in shape to the first connection end 11. One end of the first arc segment 71 is set as a closed segment 73, and the other end is set as an open segment 74; the closed segments 73 of the two groups of first clamping plates of the first fastener 41 are connected to each other. The second fastening part includes two groups of second clamping plates symmetrically arranged on both sides of the second connection end 21. The second clamping plate has a second arc segment 72 similar in shape to the second connection end 21. One end of the second arc segment 72 is set as a closed segment 73, and the other end is set as an open segment 74; the closed segments 73 of the two groups of second clamping plates of the second fastener 42 are connected to each other.

[0051] Further, the first arc segment 71 is closely arranged against the first connection end 11, and the second arc segment 72 is closely arranged against the second connection end 21. The closed segment 73 of the first fastener 41 is connected to the closed segment 73 of the second fastener 42. The open segments 74 of the first fastener 41 and the second fastener 42 are connected to each other and the openings communicate with each other to form a trumpet-shaped inlet for the pipeline to pass through. The first fastener 41 and the second fastener 42 have a gap in the axial direction to avoid the flange 1101 of the first connection end 11. After the clamp 4 is installed, the first fastener 41 limits the flange 1101 in the axial direction, and the second fastener 42 limits the first convex part 51 in the axial direction, preventing the pipeline connection from slipping in the axial direction and affecting the waterway sealing effect.

[0052] Embodiment 2

[0053] Refer to Figures 9 to 12 As shown, Embodiment 2 of the present invention provides a waterway pipeline connection structure. The difference between Embodiment 2 and Embodiment 1 is only that: the inner diameter of the pipeline main body 12 of the first pipeline 1 is equal to the inner diameter of the second pipeline 2. By flaring the first connection end 11, the inner diameter of the first connection end 11 is made larger than the inner diameter of the pipeline main body 12. The limiting part 6 is set as a conical surface. One end of the generatrix direction of the conical surface is connected to the first connection end 11, and the other end is connected to the pipeline main body 12. The insertion of the second connection end 21 is limited by the tightening of the conical surface. The waterway pipeline connection structure of the present invention can be applied to pipelines with the same diameter or different diameters, and the selection range is relatively wide.

[0054] The working principle of the waterway pipeline connection structure of the present invention is as follows:

[0055] Assemble the seal 3 into the accommodation groove 54 of the second connection end 21, then insert the seal 3 and the second connection end 21 into the inside of the first connection end 11, and after completion, fix the seal with the clamp 4.

[0056] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the creation of the present utility model.

Claims

1. A water pipeline connection structure, characterized in that: include, A first pipeline, wherein one end of the first pipeline in an extending direction is configured as a first connecting end; A second pipeline, one end of the second pipeline in the extending direction is set as a second connecting end, and the second connecting end is inserted into the inside of the first connecting end; the outer wall of the second connecting end is raised to form at least two groups of convex parts, and the convex parts are arranged along the axial direction of the second pipeline and are all arranged around the outer periphery of the second connecting end, and the gap between at least two groups of adjacent convex parts in the axial direction forms a receiving groove; A sealing member, which is located in the accommodating groove and is interference-fitted with the inner wall of the first connecting end; A clamp is sleeved on the outside of a connection between the first pipeline and the second pipeline.

2. The water pipe connection structure according to claim 1, characterized in that: The convex portion includes a first convex portion, a second convex portion and a third convex portion which are arranged in sequence, and the third convex portion is located at the port portion of the second connecting end in the axial direction; the first convex portion is tightly arranged with the second convex portion, and the accommodating groove is formed between the second convex portion and the third convex portion.

3. The water pipe connection structure according to claim 2, characterized in that: The first convex portion, the second convex portion and the third convex portion all protrude outward along the radial direction of the second pipeline, and the outer diameters of the convex portions are all equal.

4. The waterway pipe connection structure according to claim 1 or 3, characterized in that: The outer diameter of the protrusion is smaller than the inner diameter of the first connection end, and the radial gap width between the protrusion and the inner wall of the first connection end is 0.05 mm.

5. The water pipe connection structure according to claim 1, characterized in that: The first pipeline also includes a pipeline body and a limiting portion; the diameter of the pipeline body is equal to the inner diameter of the first connecting end, the limiting portion abuts against the end of the second connecting end inserted into the first connecting end, and the limiting portion protrudes radially inward from the inner wall of the first pipeline.

6. The water pipe connection structure according to claim 1, characterized in that: The first pipeline also includes a pipeline body and a limiting portion; the diameter of the pipeline body is smaller than the inner diameter of the first connection end, the limiting portion is set to a conical surface and abuts against the end of the second connection end inserted in the first connection end, one end of the conical surface in the generatrix direction is connected to the first connection end, and the other end is connected to the pipeline body.

7. The waterway pipe connection structure according to claim 1, characterized in that: The clamp includes a first fastening portion and a second fastening portion connected in sequence along the axial direction; the first fastening portion includes two groups of first clamping plates symmetrically arranged on both sides of the first connecting end, and the first clamping plates have a first arc segment that is shaped like the first connecting end; the second fastening portion includes two groups of second clamping plates symmetrically arranged on both sides of the second connecting end, and the second clamping plates have a second arc segment that is shaped like the second connecting end.

8. The water pipe connection structure according to claim 7, characterized in that: The first fastener is connected to one end of the second fastener, and the other end forms an opening; the first fastener and the second fastener have a gap in the axial direction for avoiding the flange of the first connection end.

9. The water pipe connection structure according to claim 8, characterized in that: The first fastener limits the flange in the axial direction, and the second fastener limits the first protrusion of the second pipeline in the axial direction.

10. The water pipe connection structure according to claim 1, characterized in that: The sealing member is configured as an O-ring, and the interference fit of the sealing member in the radial direction is 0.1 mm.

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