Pipe inserting structure

Abstract

The utility model discloses a pipe inserting connection structure which comprises a pipe sleeve and a pipe body, the pipe sleeve comprises an extension sleeve, the outer wall of the extension sleeve is in threaded connection with a sleeve body, the extension sleeve is provided with an end portion, a pressing pad is bonded to the end portion, the pipe body penetrates through the sleeve body and the pressing pad and is inserted into the extension sleeve, the pressing pad comprises a second conical surface portion located on the radial outer side, and a first conical surface portion located on the radial inner side of the sleeve body. And the sleeve body is screwed into the extension sleeve, so that the inner peripheral wall of the conical surface part I can tightly press the outer peripheral wall of the conical surface part II, and the inner wall of the pressure pad tightly presses the outer wall of the pipe body. The utility model provides a pipe inserting structure which is convenient to butt and operate.

Description

Technical Field

[0001] The utility model relates to the technical field of pipes, in particular to a pipe plug-in structure. Background Art

[0002] Currently, most PE pipes are butt-jointed using hot-melt welding. This involves first melting the pipe joints and then connecting them to the sleeve. Once the melted pipe hardens again, the pipe and sleeve are joined together to form a single piece. However, hot-melt welding requires the use of hot-melt welding equipment, making it inconvenient to operate. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a pipe connection structure that is convenient for connection and operation.

[0004] The utility model discloses a plug-in structure for pipes, comprising a pipe sleeve and a pipe body. The pipe sleeve comprises an extension sleeve, the outer wall of the extension sleeve is threadedly connected to the sleeve body, the extension sleeve is provided with an end portion, the end portion is bonded with a pressure pad, the pipe body passes through the sleeve body, the pressure pad and is inserted into the extension sleeve, the pressure pad comprises two conical surface portions located on the radial outside, and the sleeve body is located on the radial inside of the conical surface portion one, the sleeve body is screwed into the extension sleeve, so that the inner circumferential wall of the conical surface portion one can press the outer circumferential wall of the conical surface portion two, thereby making the inner wall of the pressure pad press the outer wall of the pipe body.

[0005] Furthermore, in a free state, the inner diameter of the pressure pad is smaller than the outer diameter of the tube body.

[0006] Furthermore, the inner wall of the pressure pad is provided with a convex ring, which is arranged at intervals along the axial direction of the pressure pad, and a ring groove or groove body is formed between two adjacent convex rings. The ring groove and the groove body are arranged in pairs, and the groove body is installed with a support plate, and the inner diameter of the support plate is the same as the inner diameter of the convex ring.

[0007] Furthermore, in the paired annular grooves and the groove body, the annular grooves are located on a side close to the extension sleeve.

[0008] Furthermore, the sleeve body includes a pressure plate, one axial end of the pressure pad is bonded to the extension sleeve, and the other end can abut against the pressure plate.

[0009] Furthermore, the pressing plate is provided with a through hole, and the diameter of the through hole is the same as the inner diameter of the extension sleeve.

[0010] Furthermore, the diameter of the first conical portion gradually increases in a direction close to the extension sleeve, and the diameter of the second conical portion gradually increases in a direction close to the extension sleeve.

[0011] Furthermore, the annular grooves are evenly distributed along the circumference of the pressure pad, and the annular grooves correspond to the support sheets one by one.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting the conical surface part 2 and the conical surface part 1, the sleeve is screwed into the extension sleeve so that the inner circumferential wall of the conical surface part 1 can press the outer circumferential wall of the conical surface part 2, so that the inner wall of the pressure pad presses the outer wall of the tube body, and the inner wall of the pressure pad presses the outer wall of the tube body. The pressure pad generates oblique pressure on the tube body, and the direction of the oblique pressure is toward the direction of the tube body being inserted into the extension sleeve to prevent the tube body from falling out of the extension sleeve.

[0014] 2. When the tube body is inserted into the extension sleeve, the support piece pushes the pressure pad outward, and at the same time the sleeve is screwed into the extension sleeve. The inner wall of the pressure pad presses the tube body. At this time, the inner wall of the convex ring squeezes the outer wall of the tube body and deforms. Due to the limitation of the support piece on the right side of the convex ring, the convex ring deforms to the left, causing the convex ring to exert a leftward force on the tube body to prevent the tube body from falling out of the extension sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional view of an embodiment Figure 1 ;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 for Figure 1 Cross-sectional view in the MM direction;

[0018] Figure 4 A cross-sectional view of an embodiment Figure 2 ;

[0019] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0020] Figure numerals: pipe sleeve 1, extension sleeve 11, step surface 111, end portion 12, sleeve body 2, conical surface portion 1 21, pressure plate 22, through hole 221, pressure pad 3, convex ring 31, annular groove 32, groove body 33, conical surface portion 2 34, support sheet 4, gasket 5, pipe body 6. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in this embodiment with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1-4 As shown, a pipe plug-in structure includes a pipe sleeve 1 and a pipe body 6. Figure 1In the figure, the main body of the sleeve 1 is a cylindrical structure. The sleeve 1 includes an extension sleeve 11. The outer diameter and inner diameter of the extension sleeve 11 are both smaller than those of the main body of the sleeve 1. A stepped surface 111 is formed on the outer wall where the main body of the sleeve 1 and the extension sleeve 11 meet. The outer wall of the extension sleeve 11 is threadedly connected to the sleeve body 2. A gasket 5 is installed between the sleeve body 2 and the stepped surface 111. The sleeve body 2 is axially penetrated and includes a pressure plate 22 at the right end. The pressure plate 22 is provided with a through hole 221. The aperture of the through hole 221 is the same as the inner diameter of the extension sleeve 11. The pipe body 6 passes through the sleeve body 2 and is inserted into the extension sleeve 11. When the pipe body 6 is inserted, the wall of the through hole 221 acts as a guide.

[0023] like Figure 1 As shown, the extension sleeve 11 is provided with an end portion 12, which is the right end surface of the extension sleeve 11. A pressure pad 3 is bonded to the end portion 12. The pressure pad 3 is a ring-shaped structure. The pressure plate 22 is located on the side of the pressure pad 3 away from the end portion 12. The left end of the pressure pad 3 is bonded and fixed to the extension sleeve 11, and the right end can abut against the pressure plate 22. The tube 6 passes through the pressure pad 3. The pressure pad 3 includes a second tapered portion 34 located radially outward, and the sleeve 2 includes a first tapered portion 21 located radially inward. The sleeve 2 is screwed into the extension sleeve 11 so that the inner circumferential wall of the first tapered portion 21 can press against the outer circumferential wall of the second tapered portion 34, thereby causing the inner wall of the pressure pad 3 to press against the outer wall of the tube 6. The diameters of the second tapered portion 34 and the first tapered portion 21 gradually decrease as the tube 6 is inserted into the extension sleeve 11. When the inner wall of the pressure pad 3 presses against the outer wall of the tube 6, the pressure pad 3 generates oblique pressure on the tube 6 to prevent the tube 6 from slipping out of the extension sleeve 11.

[0024] like Figure 1 As shown, in the free state, that is, the tube body 6 is not inserted into the extension sleeve 11, the pressure pad 3 is made of rubber, and the inner diameter of the pressure pad 3 is smaller than the outer diameter of the tube body 6. When the tube body 6 is inserted into the extension sleeve 11, the pressure pad 3 is slightly stretched to enhance the sealing effect.

[0025] like Figure 2 As shown, the inner wall of the pressure pad 3 is provided with a convex ring 31, which is annular and spaced apart along the axial direction of the pressure pad 3. An annular groove 32 or a groove body 33 is formed between two adjacent convex rings 31. The annular groove 32 and the groove body 33 are arranged in pairs, and in the paired annular groove 32 and the groove body 33, the annular groove 32 is located on the left side of the groove body 33, and the annular groove 32 is located on the left side of the groove body 33. Figure 3 There are four grooves 33 evenly distributed along the circumference of the pressure pad 3. A support sheet 4 is installed in the groove 33. The support sheet 4 is an arc-shaped strip structure. The inner diameter of the support sheet 4 is the same as the inner diameter of the convex ring 31. Figure 4 、 Figure 5 When the tube body 6 is inserted into the extension sleeve 11, the support piece 4 pushes the pressure pad 3 outward, and at the same time the sleeve 2 is screwed into the extension sleeve 11, the conical surface 1 21 squeezes the conical surface 2 34, so that the inner wall of the pressure pad 3 presses the tube body 6. At this time, the inner wall of the convex ring 31 squeezes the outer wall of the tube body 6 and deforms. Figure 5In the embodiment, due to the limitation of the support piece 4 located on the right side of the protruding ring 31 , the protruding ring 31 is deformed to the left, so that the protruding ring 31 exerts a leftward force on the tube body 6 to prevent the tube body 6 from escaping from the extension sleeve 11 .

[0026] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A pipe plug-in structure, characterized in that: The invention comprises a pipe sleeve (1) and a pipe body (6), wherein the pipe sleeve (1) comprises an extension sleeve (11), the outer wall of the extension sleeve (11) is threadedly connected to the sleeve body (2), the extension sleeve (11) is provided with an end portion (12), the end portion (12) is bonded with a pressure pad (3), the pipe body (6) passes through the sleeve body (2), the pressure pad (3) and is inserted into the extension sleeve (11), the pressure pad (3) comprises a conical surface portion 2 (34) located radially outward, the sleeve body (2) comprises a conical surface portion 1 (21) located radially inward, the sleeve body (2) is screwed into the extension sleeve (11), so that the inner peripheral wall of the conical surface portion 1 (21) can press the outer peripheral wall of the conical surface portion 2 (34), thereby making the inner wall of the pressure pad (3) press the outer wall of the pipe body (6).

2. A pipe plug-in structure according to claim 1, characterized in that: In a free state, the inner diameter of the pressure pad (3) is smaller than the outer diameter of the tube body (6).

3. The pipe plug-in structure according to claim 1, characterized in that: The inner wall of the pressure pad (3) is provided with a convex ring (31), and the convex ring (31) is arranged at intervals along the axial direction of the pressure pad (3). An annular groove (32) or a groove body (33) is formed between two adjacent convex rings (31). The annular groove (32) and the groove body (33) are arranged in pairs. The groove body (33) is installed with a support plate (4), and the inner diameter of the support plate (4) is the same as the inner diameter of the convex ring (31).

4. A pipe plug-in structure according to claim 3, characterized in that: In the paired annular groove (32) and the groove body (33), the annular groove (32) is located on a side close to the extension sleeve (11).

5. The pipe plug-in structure according to claim 1, characterized in that: The sleeve body (2) includes a pressure plate (22); one axial end of the pressure pad (3) is bonded to the extension sleeve (11), and the other end can abut against the pressure plate (22).

6. A pipe plug-in structure according to claim 5, characterized in that: The pressing plate (22) is provided with a through hole (221), and the diameter of the through hole (221) is the same as the inner diameter of the extension sleeve (11).

7. The pipe plug-in structure according to claim 1, characterized in that: The diameter of the first conical portion (21) gradually increases in a direction approaching the extension sleeve (11), and the diameter of the second conical portion (34) gradually increases in a direction approaching the extension sleeve (11).

8. The pipe plug-in structure according to claim 3, characterized in that: The annular grooves (32) are evenly distributed along the circumference of the pressure pad (3), and the annular grooves (32) correspond to the support sheets (4) one by one.

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