Polyethylene water supply pipe welding head structure

Abstract

The utility model discloses a polyethylene water supply pipe welding head structure which comprises a first water supply pipe and a second water supply pipe, connecting core pipes are inserted and welded into the opposite ends of the first water supply pipe and the second water supply pipe, and the opposite ends of the first water supply pipe and the second water supply pipe are welded. A plurality of I-shaped anti-falling connecting pieces are arranged on the surfaces of the opposite ends of the first water supply pipe and the second water supply pipe in the circumferential direction at equal intervals, the anti-falling connecting pieces are embedded in the outer walls of the first water supply pipe and the second water supply pipe, and outer sleeves are connected and welded to the surfaces of the opposite ends of the first water supply pipe and the second water supply pipe in a sleeved mode. By arranging the anti-drop connecting piece, the first water supply pipe and the second water supply pipe are connected from the physical structure, the first water supply pipe and the second water supply pipe can be effectively prevented from being axially separated, dropped and circumferentially twisted by being clamped between the first water supply pipe and the second water supply pipe, and meanwhile the connecting core pipe is matched to be welded and sealed inside, the first water supply pipe and the second water supply pipe are welded and sealed between and the outer sleeve is welded and sealed outside. Through multiple sealing and multiple connection fixing, the sealing effect is good, connection is firm, and cracking is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of polyethylene water supply pipes, and specifically relates to a welding joint structure of a polyethylene water supply pipe. Background Technique

[0002] Polyethylene pipes are commonly used for water supply and drainage. The traditional connection of polyethylene water supply pipes is usually fixed through pipe fittings and clamps. However, due to the internal water flow impact and pressure, the connection part will become loose and leak after long-term use, affecting the normal use. Later, with the introduction of the hot melt welding technology into the field of polyethylene pipes, the relative ends of the polyethylene water supply pipes are heated and welded by a hot melt machine to complete the connection. This operation method is the same as the principle of melting and extruding polyethylene pipes in the factory. Therefore, theoretically, the structural strength of the welding part can reach the structural strength and sealing performance of ordinary polyethylene pipes.

[0003] However, in actual operation, it is obvious that the on-site welding level is difficult to fully reach the melting and extruding level of factory automation equipment. Therefore, in the long-term use of existing welded polyethylene, there is also water seepage and leakage at some welding joint parts. In order to improve the structural strength and sealing performance of the welding joint of the polyethylene water supply pipe, a new type of welding joint structure of the polyethylene water supply pipe is designed and proposed. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a welding joint structure of a polyethylene water supply pipe, which is used to achieve the purpose of improving the structural strength and sealing performance of the welding joint of the polyethylene water supply pipe.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A welding joint structure of a polyethylene water supply pipe includes a first water supply pipe and a second water supply pipe. A connecting core pipe is inserted and welded inside the relative ends of the first water supply pipe and the second water supply pipe. The relative ends of the first water supply pipe and the second water supply pipe are welded. A plurality of "I"-shaped anti-disconnection connectors are equidistantly arranged along the circumferential direction on the surfaces of the relative ends of the first water supply pipe and the second water supply pipe. The anti-disconnection connectors are embedded on the outer walls of the first water supply pipe and the second water supply pipe. An outer sleeve pipe is sleeved and welded on the surfaces of the relative ends of the first water supply pipe and the second water supply pipe.

[0007] Preferably, the length of the connecting core pipe is not less than 50 mm, the length of the anti-disconnection connector is less than the length of the connecting core pipe, and the length of the outer sleeve pipe is greater than the length of the connecting core pipe.

[0008] Preferably, the first water supply pipe and the second water supply pipe have the same size and model. The wall thicknesses of the connecting core pipe and the outer sleeve pipe are both less than the wall thicknesses of the first water supply pipe and the second water supply pipe, and the connecting core pipe and the outer sleeve pipe are respectively in interference fit with the first water supply pipe and the second water supply pipe.

[0009] Preferably, the anti - detachment connecting piece is welded to the outer walls of the first water supply pipe and the second water supply pipe by heating and embedding.

[0010] Preferably, there are no less than four anti - detachment connecting pieces.

[0011] Preferably, the anti - detachment connecting piece is a stainless - steel metal piece.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] By setting the anti - detachment connecting piece, the first water supply pipe and the second water supply pipe are physically connected. Being stuck between the two can effectively prevent the two from axially separating and falling off and circumferentially twisting, avoiding cracking. At the same time, in cooperation with the connecting core pipe being welded and sealed inside, the first water supply pipe and the second water supply pipe being welded and sealed in the middle, and the outer sleeve pipe being welded and sealed outside, through multiple seals and multiple connection fixings, the sealing effect is good, the connection is firm, it is not easy to crack, and the purpose of improving the structural strength and sealing performance of the polyethylene water supply pipe welding joint is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is a front sectional view of the utility model;

[0016] Figure 3 is a right sectional view of the utility model;

[0017] Figure 4 is a front view at the corresponding position of the anti - detachment connecting piece of the utility model;

[0018] Figure 5 is a front view of the first water supply pipe and the connecting core pipe of the utility model.

[0019] In the figure: 1. The first water supply pipe; 2. The second water supply pipe; 3. The connecting core pipe; 4. The anti - detachment connecting piece; 5. The outer sleeve pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the 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 utility model.

[0021] Such as Figures 1-5As shown in the figure, the utility model provides a technical solution: a welding joint structure for polyethylene water supply pipes, including a water supply pipe 1 and a water supply pipe 2. The water supply pipe 1 and the water supply pipe 2 have the same size and model, and the opposite ends of the water supply pipe 1 and the water supply pipe 2 are welded.

[0022] A connecting core pipe 3 is inserted and welded inside the opposite ends of the water supply pipe 1 and the water supply pipe 2. The length of the connecting core pipe 3 is not less than 50 mm, and the wall thickness of the connecting core pipe 3 and the outer sleeve pipe 5 is less than the wall thickness of the water supply pipe 1 and the water supply pipe 2.

[0023] A number of "I"-shaped anti-disconnection connectors 4 are equidistantly arranged along the circumference on the opposite ends of the water supply pipe 1 and the water supply pipe 2. The anti-disconnection connectors 4 are embedded in the outer walls of the water supply pipe 1 and the water supply pipe 2. The length of the anti-disconnection connectors 4 is less than the length of the connecting core pipe 3. The anti-disconnection connectors 4 are made of stainless steel metal, and there are no less than four anti-disconnection connectors 4. The anti-disconnection connectors 4 are welded to the outer walls of the water supply pipe 1 and the water supply pipe 2 by heating and embedding.

[0024] An outer sleeve pipe 5 is sleeved and welded on the opposite ends of the water supply pipe 1 and the water supply pipe 2. The connecting core pipe 3 and the outer sleeve pipe 5 are respectively in interference fit with the water supply pipe 1 and the water supply pipe 2, and the length of the outer sleeve pipe 5 is greater than the length of the connecting core pipe 3.

[0025] Working principle:

[0026] Heat the inner wall of the right end of the water supply pipe 1 and the outer wall of the left end of the connecting core pipe 3, insert the left end of the connecting core pipe 3 into the water supply pipe 1, and cool down to complete the connection and sealing of the water supply pipe 1 and the connecting core pipe 3.

[0027] Put the outer sleeve pipe 5 on the water supply pipe 1 or the water supply pipe 2, heat the right end of the water supply pipe 1, the outer wall of the connecting core pipe 3 exposed outside the water supply pipe 1, the left end of the water supply pipe 2 and the inner wall of the left end, insert the right end of the connecting core pipe 3 into the water supply pipe 2, and butt the water supply pipe 1 and the water supply pipe 2, and cool down to complete the connection and sealing of the water supply pipe 1, the water supply pipe 2 and the connecting core pipe 3.

[0028] Heat the anti-disconnection connectors 4 and equidistantly embed them on the circumferential surface of the opposite ends of the water supply pipe 1 and the water supply pipe 2 to complete the connection between the water supply pipe 1 and the water supply pipe 2 and the anti-disconnection connectors 4.

[0029] Move the outer sleeve pipe 5 to the surface of the opposite ends of the water supply pipe 1 and the water supply pipe 2, heat the outer sleeve pipe 5 from the outside to make it molten, and then cool down the outer sleeve pipe 5 to complete the connection and sealing of the water supply pipe 1 and the water supply pipe 2 and the outer sleeve pipe 5.

[0030] By setting the anti - detachment connecting piece 4, the water supply pipe one 1 and the water supply pipe two 2 are physically connected. Being stuck between them can effectively prevent the axial separation and circumferential distortion of the two, avoiding cracking. At the same time, in cooperation with the connecting core pipe 3 being welded and sealed inside, the water supply pipe one 1 and the water supply pipe two 2 being welded and sealed in the middle, and the outer sleeve pipe 5 being welded and sealed outside, through multiple seals and multiple connection fixings, the sealing effect and connection strength are improved, making it not easy to crack.

[0031] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding joint structure for a polyethylene water supply pipe, comprising a first water supply pipe (1) and a second water supply pipe (2), characterized in that: The relative ends of the first water supply pipe (1) and the second water supply pipe (2) are internally inserted and welded with a connecting core pipe (3). The relative ends of the first water supply pipe (1) and the second water supply pipe (2) are welded. A plurality of "I"-shaped anti-disconnection connectors (4) are equidistantly arranged along the circumferential direction on the surfaces of the relative ends of the first water supply pipe (1) and the second water supply pipe (2). The anti-disconnection connectors (4) are embedded in the outer walls of the first water supply pipe (1) and the second water supply pipe (2). The relative ends of the first water supply pipe (1) and the second water supply pipe (2) are sleeved and welded with an outer sleeve pipe (5).

2. The welding joint structure of a polyethylene water supply pipe according to claim 1, characterized in that: The length of the connecting core pipe (3) is not less than 50 mm. The length of the anti-disconnection connector (4) is less than the length of the connecting core pipe (3), and the length of the outer sleeve pipe (5) is greater than the length of the connecting core pipe (3).

3. The structure of a polyethylene water supply pipe welding joint according to claim 1, characterized in that: The first water supply pipe (1) and the second water supply pipe (2) have the same size and model. The wall thickness of the connecting core pipe (3) and the wall thickness of the outer sleeve pipe (5) are both less than the wall thickness of the first water supply pipe (1) and the second water supply pipe (2), and the connecting core pipe (3) and the outer sleeve pipe (5) are respectively in interference fit with the first water supply pipe (1) and the second water supply pipe (2).

4. The structure of a polyethylene water supply pipe welding joint according to claim 1, characterized in that: The anti-disconnection connector (4) is embedded and welded on the outer walls of the first water supply pipe (1) and the second water supply pipe (2) by heating.

5. The structure of a polyethylene water supply pipe welding joint according to claim 1, characterized in that: The number of the anti-disconnection connectors (4) is not less than four.

6. The welding joint structure of a polyethylene water supply pipe according to claim 1, characterized in that: The anti-disconnection connector (4) is made of stainless steel metal.

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