PP flexible sealing pipe fitting

Abstract

The utility model provides a PP flexible sealing pipe fitting, and belongs to the technical field of pipelines. The problem of how to improve the sealing performance is solved. The PP flexible sealing pipe fitting comprises a tubular body and a hoop detachably connected to the outside of the body, a sealing ring is arranged in the body, a limiting protruding part protruding outwards is arranged on the outer side wall of the body in the circumferential direction, a mounting groove is formed in the position, located on the inner side of the limiting protruding part, in the body in the circumferential direction, and the limiting protruding part is arranged in the mounting groove. A limiting groove is formed in the inner side wall of the hoop in the circumferential direction, the sealing ring is embedded in the installation groove, and the limiting protruding part and the sealing ring are both embedded in the limiting groove so that the hoop can be axially located on the body. The PP flexible sealing pipe fitting can ensure higher sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline technical field relates to a PP flexible sealing pipe fitting. BACKGROUND

[0002] The flexible connection is used to lay the mute drainage pipeline, and the flexible connection is used to lay the mute drainage pipeline.

[0003] But the pipe and the connecting piece are connected by the way, when the water pressure in the pipe is too large, the connecting piece is impacted by the fluid along the axial direction of the pipe, the sealing ring and the connecting piece are easily pushed and displaced, the sealing between the connecting piece and the pipe is invalid, and the sealing is poor. SUMMARY

[0004] The utility model discloses a kind of PP flexible sealing pipe fittings, and the technical problems to be solved by the utility model are: how to improve sealing property.

[0005] The utility model discloses a kind of PP flexible sealing pipe fittings, and the technical problems to be solved by the utility model are: how to improve sealing property.

[0006] This PP flexible sealing pipe fitting uses a body as the main body and a socket connection with the pipe material. Before assembly, a sealing ring is mounted on the mounting groove, which initially limits the sealing ring, thus achieving pre-fixation. Next, a clamp is fitted over the body, and the clamp is axially positioned onto the body through the engagement of a limiting groove and a limiting protrusion. During installation, the sealing ring, along with the limiting protrusion, is embedded into the limiting groove. In this state, one side of the sealing ring is limited by the inner wall of the mounting groove, and the other side is limited by the inner wall of the limiting groove, thereby firmly positioning the sealing ring between the clamp and the body. Afterwards, the construction personnel will... The body and the pipe are connected by a socket joint and locked together by a clamp. During this process, the sealing ring is continuously compressed and deformed, thereby sealing the gap between the body and the pipe and preventing leakage during fluid transportation. Secondly, the sealing ring is accommodated by an installation groove to prevent irregular deformation of the sealing ring during actual installation, which could lead to sealing failure. Moreover, in actual use, especially when the fluid inside the pipeline is under high pressure, the clamp is axially positioned on the body by the connection and cooperation of the limiting groove and the limiting part, which effectively prevents axial displacement of the clamp and the sealing ring, thus ensuring the sealing performance.

[0007] In the aforementioned PP flexible sealing pipe fitting, a clearance opening is provided circumferentially on one side of the limiting groove within the clamp, extending to one edge of the clamp. A guide channel is provided circumferentially on the other side of the limiting groove within the clamp, extending to the other edge of the clamp. The inner diameter of the clearance opening is equal to the outer diameter of the main body, and the inner diameter of the guide channel is equal to the inner diameter of the main body. The clearance opening ensures that the clamp and the main body are assembled coaxially. Furthermore, during pipe connection, the outer wall of the pipe and the inner wall of the guide channel are in contact, ensuring coaxiality between the pipe and the main body during insertion. This ensures consistent circumferential pressure from the pipe on the sealing ring, preventing leakage caused by uneven circumferential pressure leading to localized seal failure.

[0008] In the aforementioned PP flexible sealing pipe fitting, the length of the guide channel accounts for two-thirds of the overall length of the clamp. This ensures that the guide channel has sufficient length to adequately guide the pipe and ensures the coaxiality between the pipe and the body after the socket connection.

[0009] In the aforementioned PP flexible sealing pipe fitting, the limiting protrusion is located at the end of the body, and both ends of the body have the limiting protrusion. This design ensures that the clamp is limited while effectively reducing the space required to create the limiting groove, thereby reducing the required length of the clamp and lowering manufacturing costs.

[0010] In the PP flexible sealing pipe fitting, the hoop comprises two arc-shaped hoop plates and screws, each of the two ends of each of the hoop plates has an outward protruding fixing protrusion on the outer side wall, the fixing protrusions of the two hoop plates are opposite to each other and are fixed by the screws.

[0011] In the PP flexible sealing pipe fitting, the inner side wall of the body has an inward protruding abutting portion near the middle portion in the circumferential direction. This ensures that the construction personnel can be prompted whether the socket of the pipe material and the body is in place during installation.

[0012] Compared with the prior art, the PP flexible sealing pipe fitting has the following advantages: through the cooperation of the limiting protrusion and the limiting groove, the hoop and the sealing ring assembled in the mounting groove of the body can be positioned on the body in the axial direction, so that the impact force of the fluid during use is prevented from acting on the hoop and the sealing ring to cause displacement of the two, the sealing property is ensured, and the outer wall of the pipe material is guided by the guide surface of the hoop, so that the pipe material and the body maintain good coaxiality, the pressure on the circumferential direction of the sealing ring tends to be uniform, and local leakage is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the PP flexible sealing pipe fitting.

[0014] Figure 2 is a sectional view and a partial enlarged view of the PP flexible sealing pipe fitting along the axial direction.

[0015] Figure 3 is a structural schematic view of the hoop.

[0016] Figure 4 is a structural schematic view of the body.

[0017] Figure 5 is a sectional view and a partial enlarged view of the PP flexible sealing pipe fitting and the pipe material assembled together and along the axial direction.

[0018] In the drawings, 1, the body; 11, the sealing ring; 12, the limiting protrusion; 13, the mounting groove; 14, the abutting portion; 2, the hoop; 21, the accommodation opening; 22, the guide channel; 23, the hoop plate; 231, the fixing protrusion; 24, the screw; 3, the pipe material. DETAILED DESCRIPTION

[0019] The following is a specific embodiment of the utility model and is combined with the drawings to further describe the technical scheme of the utility model, but the utility model is not limited to these embodiments.

[0020] As Figure 1 and Figure 5As shown, this PP flexible sealing pipe fitting includes a tubular body 1, with both ends of the body 1 serving as sockets for connection with the pipe 3. Figure 3 This PP flexible sealing pipe fitting also includes a clamp 2 that can be detachably connected to any one or both ends of the body 1. The clamp 2 specifically includes at least two arc-shaped clamp plates 23 and screws 24 for screwing and locking the two clamp plates 23 together. Each clamp plate 23 has a fixing protrusion 231 protruding from its outer side wall at both ends. Each fixing protrusion 231 has a fixing hole. During assembly, the two clamp plates 23 are arranged opposite each other and the fixing protrusions 231 are aligned one by one. Then the screws 24 are assembled and tightened. The clamp 2 after assembly is annular. A limiting groove 25 is opened circumferentially on the inner side wall near one end. A clearance opening 21 extending to the edge of one end of the clamp 2 is opened on one side of the limiting groove 25. A guide channel 22 extending to the edge of the other end of the clamp 2 is opened on the other side of the limiting groove 25.

[0021] Combination Figure 2 and Figure 4 The main body 1 has outwardly protruding limiting protrusions 12 at both ends along the circumferential direction. A mounting groove 13 is provided circumferentially inside the limiting protrusions 12 within the main body 1. A sealing ring 11 with an axial thickness less than the depth of the mounting groove 13 is embedded in the mounting groove 13 (the gap reserved in the mounting groove 13 is used to accommodate the axial deformation of the sealing ring 11 after elastic deformation). The clamp 2 is fastened to one end of the main body 1 through a limiting groove 25 and a limiting protrusion 12, ensuring axial positioning. The inner wall of the clearance opening 21 at one end fits against the outer wall of the main body 1 below the limiting protrusion 12. After tightening several screws 24 connecting the two clamp plates 23, the clamp 2 is axially positioned at the end of the main body 1 through the cooperation of the limiting groove 25 and the limiting protrusion 12. The inner wall of the limiting groove 25 and the inner wall of the mounting groove 13 cooperate to axially position the sealing ring 11. Furthermore, an inwardly protruding abutment 14 is provided circumferentially near the center of the main body 1.

[0022] like Figure 5As shown, when assembling and connecting, the two hoop plates 23 forming the hoop 2 are not locked by the screw 24, and in this state, the hoop 2 is first assembled to the end of the body 1 through the limiting groove 25, and the hoop 2 is first positioned by the cooperation of the limiting groove 25 and the limiting protrusion 12, and then the screw 24 is appropriately screwed, so that the structure of the hoop 2 is ensured to be maintained, then the pipe 3 is inserted into the end port of the body 1 through the hoop 2, and after passing through the sealing ring 11 and abutting against the abutting portion 14, at this time, the sealing ring 11 is deformed in the installation groove 13 by the extrusion of the outer wall of the pipe 3 to seal the gap between the pipe 3 and the body 1, and finally the installer completely tightens the screw 24 connecting the two hoop plates 23, in this state, the guide channel 22 is formed and has the same inner diameter as the body 1, that is, the outer peripheral wall of the pipe 3 located on both sides of the sealing ring 11 is guided and corrected by the cooperation of the inner peripheral wall of the guide channel 22 and the inner peripheral wall of the body 1, so as to ensure that the pressure applied by the outer wall of the pipe 3 to the sealing ring 11 tends to be uniform in the circumferential direction, so as to avoid the situation that local sealing failure occurs due to uneven pressure.

[0023] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0024] Although the terms such as body 1, sealing ring 11, limiting protrusion 12, installation groove 13, abutting portion 14, hoop 2, accommodation opening 21, guide channel 22, hoop plate 23, fixed protrusion 231, screw 24, pipe 3, etc. are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation by interpreting them is contrary to the spirit of the present application.

Claims

1. A PP flexible sealing pipe fitting comprising a body (1) in the shape of a pipe and a clamp (2) detachably connected to the outside of said body (1), a sealing ring (11) being provided in said body (1), characterized in that, The outer side wall of the body (1) has an outward protruding limiting protrusion (12) in the circumferential direction, and the body (1) has an installation groove (13) in the circumferential direction inside the limiting protrusion (12), the inner side wall of the hoop (2) has a limiting groove (25) in the circumferential direction, the sealing ring (11) is embedded in the installation groove (13), and the limiting protrusion (12) and the sealing ring (11) are embedded in the limiting groove (25) and axially position the hoop (2) on the body (1).

2. The PP flexible sealed tube of claim 1, wherein, The hoop (2) has a letting port (21) in the circumferential direction on one side of the limiting groove (25), and the letting port (21) extends to one end edge of the hoop (2), and the hoop (2) has a guide channel (22) in the circumferential direction on the other side of the limiting groove (25), and the guide channel (22) extends to the other end edge of the hoop (2), the inner diameter of the letting port (21) is equal to the outer diameter of the body (1), and the inner diameter of the guide channel (22) is equal to the inner diameter of the body (1).

3. The PP flexible sealed tube of claim 2, wherein, The length of the guide channel (22) accounts for two-thirds of the overall length of the hoop (2).

4. The PP flexible sealed tube of any one of claims 1-3, wherein, The limiting protrusion (12) is located at the end of the body (1), and the body (1) has the limiting protrusion (12) at both ends.

5. The PP flexible sealed tube of claim 3, wherein, The hoop (2) comprises two arc-shaped hoop plates (23) and a plurality of screws (24), and the outer side wall of each hoop plate (23) has an outward protruding fixing protrusion (231) at both ends, and the fixing protrusions (231) of the two hoop plates (23) are opposite to each other and are fixed by the screws (24).

6. The PP flexible sealed tube of claim 4, wherein, The inner side wall of the body (1) has an inward protruding abutting portion (14) in the circumferential direction near the middle.

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