Connecting structure of plastic glass tube

Abstract

The invention provides a connecting structure of plastic glass tubes, which is used for connecting two plastic glass tubes together, and comprises a connecting piece, the connecting piece is a cylindrical body with a first opening and a second opening at two ends respectively, the two plastic glass tubes are respectively a first plastic glass tube and a second plastic glass tube, the first plastic glass tube is provided with a first connecting end, the second plastic glass tube is provided with a second connecting end, and the first connecting end and the second connecting end extend into an inner cavity of the connecting piece through the first opening and the second opening respectively; a first melting bonding layer is laid on the inner wall of the connecting piece, and a first heating element capable of being electrically connected with an external power supply is arranged in the first melting bonding layer, so that the first heating element can heat the first melting bonding layer to melt the first melting bonding layer; and the first connecting end and the second connecting end which extend into the inner cavity of the connecting piece are bonded on the inner wall of the connecting piece. The sealing device has the advantages of being good in sealing performance, long in service life and convenient to manufacture.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline joints, and in particular to a connection structure of a plastic-glass tube. Background Art

[0002] At present, the connection between two plastic-glass tubes is achieved through steel structure connecting fittings. However, steel structure fittings are not only easily corroded during use due to their material, but also complicated to operate when connecting pipelines. At the same time, since the pipe fittings and the connected plastic-glass tubes are made of different materials, the sealing performance of the fitting connection is difficult to meet the requirements. Summary of the Invention

[0003] The object of the present invention is to provide a plastic-glass tube connection structure which has good sealing performance, long service life and is easy to manufacture.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A plastic-glass tube connection structure for connecting two plastic-glass tubes, comprising: a connecting piece;

[0006] The connecting member is a cylindrical body having a first opening and a second opening at both ends, respectively. The two plastic glass tubes are a first plastic glass tube and a second plastic glass tube, respectively. The first plastic glass tube has a first connecting end, and the second plastic glass tube has a second connecting end. The first connecting end and the second connecting end extend into the inner cavity of the connecting member through the first opening and the second opening, respectively.

[0007] A first melting adhesive layer is applied on the inner wall of the connector, and a first heating element electrically connected to an external power source is provided in the first melting adhesive layer so that the first heating element can heat the first melting adhesive layer to melt it, thereby bonding the first connection end and the second connection end extending into the inner cavity of the connector to the inner wall of the connector.

[0008] Preferably, the material of the first melting adhesive layer is PE.

[0009] Preferably, the inner cavity of the connecting member includes a first cavity and a central cavity, both of which have overlapping axes and are cylindrical in shape, the first cavity forms the first opening on the surface of the connecting member, and the diameter of the first cavity is larger than the diameter of the central cavity;

[0010] The first plastic-glass tube includes a first inner layer tube and a first reinforcement layer tube. The first reinforcement layer tube is sleeved on the first inner layer tube. The first inner layer tube on the first connecting end extends from the first reinforcement layer tube. When the first connecting end extends from the first opening into the inner cavity of the connecting piece, the first inner layer tube can extend into the central cavity through the first cavity, and the first reinforcement layer tube is located within the first cavity.

[0011] Preferably, the inner cavity of the connecting member further comprises a cylindrical second cavity whose axis coincides with the central cavity, the second cavity forms the second opening on the surface of the connecting member, and the diameter of the second cavity is larger than the diameter of the central cavity;

[0012] The second plastic-glass tube includes a second inner layer tube and a second reinforcing layer tube. The second reinforcing layer tube is sleeved on the second inner layer tube. The second inner layer tube on the second connecting end extends from the second reinforcing layer tube. When the second connecting end extends from the second opening into the inner cavity of the connecting piece, the second inner layer tube can extend into the central cavity through the second cavity, and the second reinforcing layer tube is located within the second cavity.

[0013] Preferably, the first inner tube and the second inner tube are both interference fit with the central cavity, and the interference fit δ of the two is 2 mm to 3 mm.

[0014] Preferably, when the first inner tube and the second inner tube are both inserted into the central cavity, in the axial direction of the central cavity, the length of the first inner tube and the second inner tube extending into the central cavity is L, the outer diameter of the first inner tube and the second inner tube is R1, and the inner diameter of the first inner tube and the second inner tube is R2.

[0015] The distance between the first inner tube and the second inner tube along the axis of the central cavity is D, and Where H is (R1-R2) / 2.

[0016] Preferably, it further comprises an outer sleeve having a cylindrical inner cavity;

[0017] The connecting member is located inside the outer sleeve, and its axis coincides with the axis of the inner cavity of the outer sleeve. The outer contour of the connecting member is cylindrical matching the inner cavity shape of the outer sleeve, and the outer wall of the connecting member is fixedly connected to the inner wall of the outer sleeve.

[0018] Preferably, in the direction along the outer sleeve line, the two ends of the outer sleeve are respectively a first end and a second end, and the first end is away from the end of the connector having the first opening in a direction away from the connector, so that a first accommodating cavity is formed between the connector and the first end;

[0019] The first plastic-glass tube also includes a first outer layer tube, which is sleeved on the first reinforcement layer tube. The first reinforcement layer tube on the first connecting end extends from the first outer tube. When the first connecting end extends from the first opening into the inner cavity of the connecting piece, the first outer layer tube is located within the first accommodating cavity.

[0020] Preferably, the second end is spaced apart from the end of the connecting member having the second opening in a direction away from the connecting member, so that a second accommodating cavity is formed between the connecting member and the second end.

[0021] The second plastic-glass tube also includes a second outer layer tube, which is sleeved on the second reinforcement layer tube. The second reinforcement layer tube on the second connecting end extends from the second outer tube. When the second connecting end extends from the second opening into the inner cavity of the connecting piece, the second outer layer tube is located within the second accommodating cavity.

[0022] Preferably, a second melting adhesive layer is applied on the inner wall of the first accommodating cavity, and a second heating element electrically connected to the first heating element is provided in the second melting adhesive layer, so that the second heating element can heat the second melting adhesive layer to melt it, thereby bonding the first outer layer tube extending into the first accommodating cavity to the inner wall of the first accommodating cavity;

[0023] And / or, a third melting adhesive layer is applied on the inner wall of the second accommodating cavity, and a third heating element electrically connected to the first heating element is arranged in the third melting adhesive layer, so that the third heating element can heat the third melting adhesive layer to melt it, and then adhere the second outer layer tube extending into the second accommodating cavity to the inner wall of the second accommodating cavity.

[0024] The connection structure of the plastic-glass tube of the present invention adopts a technical solution in which a first melting adhesive layer is provided on the inner wall of the connecting piece, and a first heating element that can be electrically connected to an external power supply is provided in the first melting adhesive layer, so that the first heating element can heat the first melting adhesive layer to melt it, and then the first connecting end and the second connecting end extending into the inner cavity of the connecting piece are adhered to the inner wall of the connecting piece. The technical solution has the advantages of good sealing, long service life, and easy manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of an embodiment of the connection structure of a plastic-glass tube according to the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the middle connecting piece (with an outer sleeve on the outside);

[0027] Figure 3 for Figure 1 A magnified schematic diagram of part A in FIG.

[0028] In the figure: 1-connecting part; 2-first opening; 3-second opening; 4-first plastic-glass tube; 5-second plastic-glass tube; 6-first melting adhesive layer; 7-first heating element; 8-first cavity; 9-central cavity; 10-first inner tube; 11-first reinforcement layer tube; 12-second cavity; 13-second inner tube; 14-second reinforcement layer tube; 15-outer sleeve; 16-first end; 17-second end; 18-first accommodating cavity; 19-first outer tube; 20-second accommodating cavity; 21-second outer tube; 22-second melting adhesive layer; 23-second heating element; 24-third melting adhesive layer; 25-third heating element. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following further describes the plastic-glass tube connection structure of the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] Example 1

[0031] like Figure 1 、 2As shown, a plastic-glass tube connection structure is used to connect two plastic-glass tubes together. It includes a connector 1, which is a cylindrical body having a first opening 2 and a second opening 3 at each end. The two plastic-glass tubes are a first plastic-glass tube 4 and a second plastic-glass tube 5. The first plastic-glass tube 4 has a first connection end (not shown), and the second plastic-glass tube 5 has a second connection end (not shown). The first connection end and the second connection end extend into the inner cavity of the connector 1 through the first opening 2 and the second opening 3, respectively. A first melting adhesive layer 6 is applied to the inner wall of the connector 1. A first heating element 7 electrically connected to an external power source is disposed within the first melting adhesive layer 6. The first heating element 7 heats and melts the first melting adhesive layer 6, thereby bonding the first and second connection ends extending into the inner cavity of the connector 1 to the inner wall of the connector 1. In actual use, the first connection end and the second connection end are first inserted into the inner cavity of the connector 1 through the first opening 2 and the second opening 3 respectively, and then the first heating element 7 (which can be an electric heating wire) is energized. At this time, the first melting adhesive layer 6 is heated and melted by the first heating element 7. Then, the power supply to the first heating element 7 is stopped, and the melted first melting adhesive layer 6 is cooled and solidified, so that the first connection end and the second connection end inserted into the inner cavity of the connector 1 are bonded to the inner wall of the connector 1.

[0032] In actual production, the material of the first melting adhesive layer 6 can be PE, but is not limited thereto. The material of the connecting member 1 can be a glass fiber layer, a metal layer, or a chemical fiber layer.

[0033] Example 2

[0034] Based on Example 1, Figure 2 As shown, the inner cavity of the connector 1 includes a first cavity 8 and a central cavity 9, both of which have the same axis and are cylindrical in shape. The first cavity 8 forms a first opening 2 on the surface of the connector 1, and the diameter of the first cavity 8 is larger than the diameter of the central cavity 9. Figure 1As shown, the first plastic-glass tube 4 includes a first inner tube 10 and a first reinforcing tube 11. The first reinforcing tube 11 is sleeved onto the first inner tube 10. The first inner tube 10 at the first connecting end extends from the first reinforcing tube 11. When the first connecting end extends from the first opening 2 into the inner cavity of the connector 1, the first inner tube 10 can pass through the first cavity 8 and extend into the central cavity 9, while the first reinforcing tube 11 is located within the first cavity 8. At this point, the outer wall of the first inner tube 10 is bonded to the inner wall of the central cavity 9, and the outer wall of the first reinforcing tube 11 is bonded to the inner wall of the first cavity 8. Before the first connecting end of the first plastic-glass tube 4 is inserted into the inner cavity of the connector 1, the first inner tube 10 can be extended from the first reinforcing tube 11 by 9 to 11 mm to ensure that the first inner tube 10 is located within the central cavity 9, thereby ensuring a secure connection between the first inner tube 10 and the connector 1.

[0035] Furthermore, if Figure 2 As shown, the inner cavity of the connector 1 further includes a cylindrical second cavity 12 whose axis coincides with the central cavity 9. The second cavity 12 forms a second opening 3 on the surface of the connector 1, and the diameter of the second cavity 12 is greater than the diameter of the central cavity 9. Figure 1 As shown, the second plastic-glass tube 5 includes a second inner tube 13 and a second reinforcing tube 14. The second reinforcing tube 14 is sleeved onto the second inner tube 13. The second inner tube 13 at the second connecting end extends from the second reinforcing tube 14. When the second connecting end extends from the second opening 3 into the inner cavity of the connector 1, the second inner tube 13 can pass through the second cavity 12 and extend into the central cavity 9, while the second reinforcing tube 14 is located within the second cavity 12. At this point, the outer wall of the second inner tube 13 is bonded to the inner wall of the central cavity 9, and the outer wall of the second reinforcing tube 14 is bonded to the inner wall of the second cavity 12. Before inserting the second connecting end of the second plastic-glass tube 5 into the inner cavity of the connector 1, the second inner tube 13 can be extended from the second reinforcing tube 14 by 9 to 11 mm to ensure that the 9 to 11 mm length of the second inner tube 13 is located within the central cavity 9, thereby ensuring a secure connection between the second inner tube 13 and the connector 1.

[0036] Example 3

[0037] Based on the second embodiment, the first inner tube 10 and the second inner tube 13 are both interference fit with the central cavity 9 , and the interference amount δ of the two is 2 mm to 3 mm.

[0038] Specifically, if Figure 1 、 3As shown, when the first inner layer tube 10 and the second inner layer tube 13 are both extended into the central cavity 9, in the axial direction of the central cavity 9, the lengths of the first inner layer tube 10 and the second inner layer tube 13 extending into the central cavity 9 are both L, the outer diameters of the first inner layer tube 10 and the second inner layer tube 13 are both R1, and the inner diameters of the first inner layer tube 10 and the second inner layer tube 13 are both R2.

[0039] The distance between the first inner tube 10 and the second inner tube 13 along the axis of the central cavity 9 is D, and Where H is (R1-R2) / 2.

[0040] Example 4

[0041] Based on Example 2, Figure 1 、 2 As shown, it also includes an outer sleeve 15 with a cylindrical inner cavity. The connector 1 is located within the outer sleeve 15, and its axis coincides with the axis of the inner cavity of the outer sleeve 15. The outer profile of the connector 1 is cylindrical to match the shape of the inner cavity of the outer sleeve 15, and the outer wall of the connector 1 is fixedly connected to the inner wall of the outer sleeve 15. With this technical solution, the outer sleeve 15 can protect the connector 1 from damage caused by external forces.

[0042] Specifically, if Figure 1 、 2 As shown, along the line of outer sleeve 15, outer sleeve 15 has first and second ends 16 and 17, respectively. First end 16, facing away from connector 1, is spaced apart from the end of connector 1 having first opening 2, thereby forming a first accommodating cavity 18 between connector 1 and first end 16. First plastic glass tube 4 also includes a first outer tube 19, which is sleeved over first reinforcing tube 11. First reinforcing tube 11 at the first connecting end extends from the first outer tube. When the first connecting end extends from the first opening 2 into the inner cavity of connector 1, first outer tube 19 is positioned within first accommodating cavity 18. Before inserting the first connecting end of first plastic glass tube 4 into the inner cavity of connector 1, first reinforcing tube 11 is allowed to extend from first outer tube 19 by 9 to 11 millimeters. This ensures that the remaining 9 to 11 millimeters of first reinforcing tube 11 remain within the first cavity, thereby ensuring a secure connection between first reinforcing tube 11 and connector 1.

[0043] Furthermore, if Figure 1 、 2As shown, the second end 17 faces away from the connector 1 and is spaced apart from the end of the connector 1 having the second opening 3, so that a second accommodating cavity 20 is formed between the connector 1 and the second end 17. The second plastic-glass tube 5 also includes a second outer tube 21, which is sleeved over the second reinforcing tube 14. The second reinforcing tube 14 on the second connecting end extends from the second outer tube. When the second connecting end extends from the second opening 3 into the inner cavity of the connector 1, the second outer tube 21 is located within the second accommodating cavity 20. Before the second connecting end of the second plastic-glass tube 5 is inserted into the inner cavity of the connector 1, the second reinforcing tube 14 can be extended from the second outer tube 21 by 9 to 11 mm to ensure that the 9 to 11 mm length of the second reinforcing tube 14 is located within the second cavity 12, thereby ensuring a secure connection between the second reinforcing tube 14 and the connector 1.

[0044] Example 5

[0045] Based on the fourth embodiment, Figure 1 、 2 As shown, a second melting adhesive layer 22 is applied on the inner wall of the first accommodating cavity 18, and a second heating element 23 electrically connected to the first heating element 7 is provided in the second melting adhesive layer 22, so that the second heating element 23 can heat the second melting adhesive layer 22 to melt it, and then adhere the first outer layer tube 19 extending into the first accommodating cavity 18 to the inner wall of the first accommodating cavity 18.

[0046] And / or, a third melting adhesive layer 24 is laid on the inner wall of the second accommodating cavity 20, and a third heating element 25 electrically connected to the first heating element 7 is arranged in the third melting adhesive layer 24, so that the third heating element 25 can heat the third melting adhesive layer 24 to melt it, and then adhere the second outer layer tube 21 extending into the second accommodating cavity 20 to the inner wall of the second accommodating cavity 20.

[0047] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A plastic-glass tube connection structure for connecting two plastic-glass tubes, characterized in that: include: Connector (1); The connecting member (1) is a cylindrical body having a first opening (2) and a second opening (2) at both ends, respectively; the two plastic glass tubes are a first plastic glass tube (4) and a second plastic glass tube (5), respectively; the first plastic glass tube (4) has a first connecting end, and the second plastic glass tube (5) has a second connecting end; the first connecting end and the second connecting end extend into the inner cavity of the connecting member (1) through the first opening (2) and the second opening (2), respectively; A first melting adhesive layer (6) is applied on the inner wall of the connecting member (1), and a first heating element (7) electrically connected to an external power source is provided in the first melting adhesive layer (6), so that the first heating element (7) can heat the first melting adhesive layer (6) to melt it, thereby bonding the first connection end and the second connection end extending into the inner cavity of the connecting member (1) to the inner wall of the connecting member (1).

2. The plastic-glass tube connection structure according to claim 1, characterized in that: The material of the first melting adhesive layer (6) is PE.

3. The plastic-glass tube connection structure according to claim 1, characterized in that: The inner cavity of the connecting member (1) comprises a first cavity (8) and a central cavity (9) whose axes coincide and are both cylindrical in shape; the first cavity (8) forms the first opening (2) on the surface of the connecting member (1), and the diameter of the first cavity (8) is larger than the diameter of the central cavity (9); The first plastic glass tube (4) includes a first inner layer tube (10) and a first reinforcement layer tube (11), wherein the first reinforcement layer tube (11) is sleeved on the first inner layer tube (10), and the first inner layer tube (10) on the first connecting end extends from the first reinforcement layer tube (11). When the first connecting end extends from the first opening (2) into the inner cavity of the connecting member (1), the first inner layer tube (10) can extend into the central cavity (9) through the first cavity (8), and at the same time, the first reinforcement layer tube (11) is located within the first cavity (8).

4. The plastic-glass tube connection structure according to claim 3, characterized in that: The inner cavity of the connecting member (1) further comprises a cylindrical second cavity (12) whose axis coincides with the central cavity (9); the second cavity (12) forms the second opening (2) on the surface of the connecting member (1), and the diameter of the second cavity (12) is greater than the diameter of the central cavity (9); The second plastic glass tube (5) includes a second inner layer tube (13) and a second reinforcement layer tube (14). The second reinforcement layer tube (14) is sleeved on the second inner layer tube (13). The second inner layer tube (13) on the second connecting end extends from the second reinforcement layer tube (14). When the second connecting end extends from the second opening (2) into the inner cavity of the connecting member (1), the second inner layer tube (13) can pass through the second cavity (12) and extend into the central cavity (9). At the same time, the second reinforcement layer tube (14) is located in the second cavity (12).

5. The plastic-glass tube connection structure according to claim 4, characterized in that: The first inner tube (10) and the second inner tube (13) are both interference fit with the central cavity (9), and the interference amount δ of the two is 2 mm to 3 mm.

6. The plastic-glass tube connection structure according to claim 5, characterized in that: When the first inner layer tube (10) and the second inner layer tube (13) are both extended into the central cavity (9), in the axial direction of the central cavity (9), the length of the first inner layer tube (10) and the second inner layer tube (13) extending into the central cavity (9) is L, the outer diameters of the first inner layer tube (10) and the second inner layer tube (13) are R1, and the inner diameters of the first inner layer tube (10) and the second inner layer tube (13) are R2. The distance between the first inner tube (10) and the second inner tube (13) along the axial direction of the central cavity (9) is D, and Where H is (R1-R2) / 2.

7. The plastic-glass tube connection structure according to claim 4, characterized in that: Also includes an outer sleeve (15) having a cylindrical inner cavity; The connecting member (1) is located inside the outer sleeve (15), and its axis coincides with the axis of the inner cavity of the outer sleeve (15). The outer contour of the connecting member (1) is cylindrical and matches the inner cavity shape of the outer sleeve (15), and the outer wall of the connecting member (1) is fixedly connected to the inner wall of the outer sleeve (15).

8. The plastic-glass tube connection structure according to claim 7, characterized in that: In a direction along the line of the outer sleeve (15), the two ends of the outer sleeve (15) are respectively a first end (16) and a second end (17), and the first end (16) is spaced apart from an end of the connector (1) having the first opening (2) in a direction away from the connector (1), so that a first accommodating cavity (18) is formed between the connector (1) and the first end (16); The first plastic-glass tube (4) further comprises a first outer tube (19), the first outer tube (19) being sleeved on the first reinforcing tube (11), the first reinforcing tube (11) on the first connecting end extending from the first outer tube, and when the first connecting end extends from the first opening (2) into the inner cavity of the connecting member (1), the first outer tube (19) is located within the first accommodating cavity (18).

9. The plastic-glass tube connection structure according to claim 8, characterized in that: The second end (17) is spaced apart from the end of the connecting member (1) having the second opening (2) in a direction away from the connecting member (1), so that a second accommodating cavity (20) is formed between the connecting member (1) and the second end (17); The second plastic-glass tube (5) further comprises a second outer tube (21), the second outer tube (21) being sleeved on the second reinforcing layer tube (14), the second reinforcing layer tube (14) on the second connecting end extending from the second outer tube, and when the second connecting end extends from the second opening (2) into the inner cavity of the connecting member (1), the second outer tube (21) is located within the second accommodating cavity (20).

10. The plastic-glass tube connection structure according to claim 9, characterized in that: A second melting adhesive layer (22) is applied on the inner wall of the first accommodating cavity (18), and a second heating element (23) electrically connected to the first heating element (7) is provided in the second melting adhesive layer (22), so that the second heating element (23) can heat the second melting adhesive layer (22) to melt it, thereby bonding the first outer layer tube (19) extending into the first accommodating cavity (18) to the inner wall of the first accommodating cavity (18); And / or, a third melting adhesive layer (24) is applied on the inner wall of the second accommodating cavity (20), and a third heating element (25) electrically connected to the first heating element (7) is provided in the third melting adhesive layer (24), so that the third heating element (25) can heat the third melting adhesive layer (24) to melt it, and then adhere the second outer layer tube (21) extending into the second accommodating cavity (20) to the inner wall of the second accommodating cavity (20).

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