Flange joint of plastic pipe

Abstract

The utility model relates to a flange joint of a plastic pipe, which comprises a first body and a second body, the first body and the second body are buckled with each other and are fixedly connected through a bolt, and the flange joint is provided with a through hole for sleeving the plastic pipe and bolt holes which are uniformly distributed. The flange joint further comprises a first neck part arranged on the first body and a second neck part arranged on the second body, and the first neck part and the second neck part are buckled with each other so as to be used for clamping a plastic pipe. The inner wall of the through hole of the flange connector is further provided with a groove position used for containing a sealing ring.

Description

Technical Field

[0001] The present application belongs to the technical field of pipeline connection, and relates to a flange joint of a plastic pipe. Background Art

[0002] Flanges are parts used to connect pipes to each other. Bolt holes are usually provided on the flanges. Bolts connect the two flanges tightly. Gaskets (flange gaskets) are usually used to seal between the flanges. For plastic pipe connection systems, the common method is to groove the plastic pipes and use grooved single-piece flanges for connection and installation, or to thread the plastic pipes and screw them into the threaded flanges, and then make flange connections. Currently, there are no special pipe fittings to achieve the connection function of plastic pipes, and the installation is relatively cumbersome. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the purpose of the present application is to provide a flange joint for a plastic pipe to achieve direct connection between a flange and a plastic pipe.

[0004] The present application is implemented through the following technical solutions.

[0005] The technical solution is to provide a flange joint for a plastic pipe, comprising a first body and a second body, the first body and the second body being buckled with each other and fixedly connected by bolts, the flange joint being provided with a through hole for being sleeved on the plastic pipe and bolt holes being evenly arranged, the flange joint also comprising a first neck arranged on the first body and a second neck arranged on the second body, the first neck and the second neck being buckled with each other for clamping the plastic pipe; the inner wall of the through hole of the flange joint is also provided with a groove position for placing a sealing ring.

[0006] The flange joint of the present technical solution clamps the plastic pipe by snapping the first neck and the second neck together, and uses a sealing ring to seal the plastic pipe and the flange joint. Compared with the prior art, it is no longer necessary to thread the plastic pipe or groove the plastic pipe, so the installation process is simplified, and direct connection between the flange and the plastic pipe can be achieved.

[0007] In one embodiment of the technical solution, the inner walls of the first neck and the second neck are provided with a plurality of anti-slip ridges, and the plurality of anti-slip ridges are in a ring shape and are coaxially arranged with the through hole.

[0008] In one embodiment of the technical solution, a first lug is provided on the first body, and a second lug corresponding to the first lug is provided on the second body. The first lug and the second lug are stacked downward along the flange axis, and at least one bolt hole passes through the first lug and the second lug.

[0009] In one embodiment of the technical solution, the number of the first lugs on the first body is two, and the number of the second lugs on the second body is two.

[0010] In one embodiment of the technical solution, a first connection portion is provided at one end of the first body, and a second connection portion corresponding to the first connection portion is provided on the second body, wherein the first connection portion and the second connection portion are fixedly connected by bolts.

[0011] In one embodiment of the technical solution, the number of the first connection parts is two, which are respectively located at two ends of the first body; the number of the second connection parts is two, which are respectively located at two ends of the second body.

[0012] In one embodiment of the technical solution, a third connecting portion located on the first neck is provided at one end of the first body, and a fourth connecting portion located on the second neck and corresponding to the third connecting portion is provided on the second body, wherein the third connecting portion and the fourth connecting portion are fixedly connected by bolts to increase the clamping effect of the first neck and the second neck to prevent the plastic tube from loosening.

[0013] In one embodiment of the technical solution, the number of the third connection parts is two, which are respectively located at two ends of the first neck; the number of the fourth connection parts is two, which are respectively located at two ends of the second neck.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0016] Figure 1 It is a schematic diagram of the structure of a flange joint shown in an embodiment of the present application.

[0017] Figure 2 It is a schematic diagram of the exploded structure of a flange joint shown in an embodiment of the present application.

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of a flange joint connected to a plastic pipe shown in an embodiment of the present application.

[0019] Description of reference numerals:

[0020] 10-flange joint; 101-through hole; 102-bolt eyelet; 103-anti-slip ridge; 104-groove position; 11-first body; 111-first neck; 112-first lug; 113-first connecting part; 114-third connecting part; 12-second body; 121-second neck; 122-second lug; 123-second connecting part; 124-fourth connecting part; 13-sealing ring; 21-plastic pipe; 22-ordinary flange; 23-stainless steel pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in some embodiments of the present application to clearly and completely describe the technical solutions in some embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 3 As shown in the figure, this embodiment is a flange joint 10 of a plastic pipe 21, which is used for direct connection with the plastic pipe 21. After the flange joint 10 is connected, the plastic pipe 21 can be directly connected to a stainless steel pipe 23 with a common flange 22. The common flange 22 and the stainless steel pipe 23 are usually welded.

[0024] The flange joint 10 includes a first body 11 and a second body 12, which are buckled with each other and fixedly connected by bolts. The flange joint 10 is provided with a through hole 101 for being sleeved on the plastic pipe 21 and bolt holes 102 evenly arranged. The flange joint 10 also includes a first neck 111 provided on the first body 11 and a second neck 121 provided on the second body 12. The first neck 111 and the second neck 121 are buckled with each other for clamping the plastic pipe 21; the inner wall of the through hole 101 of the flange joint 10 is also provided with a groove position 104 for placing the sealing ring 13.

[0025] In this way, the flange joint 10 clamps the plastic tube 21 by snapping together the first neck 111 and the second neck 121, and the sealing ring 13 is used to seal between the plastic tube 21 and the flange joint 10. Compared with the prior art, it is no longer necessary to thread the plastic tube 21 or to groove the plastic tube 21, so the installation process is simplified, and direct connection between the flange and the plastic tube 21 is achieved.

[0026] In this embodiment, the inner walls of the first neck 111 and the second neck 121 are both provided with a plurality of anti-slip ridges 103 . The plurality of anti-slip ridges 103 are ring-shaped and are coaxially arranged with the through hole 101 .

[0027] In this embodiment, a first lug 112 is provided on the first body 11, and a second lug 122 corresponding to the first lug 112 is provided on the second body 12. The first lug 112 and the second lug 122 are stacked downward along the flange axis, and at least one bolt hole 102 passes through the first lug 112 and the second lug 122.

[0028] The first body 11 and the second body 12 are fixedly connected by bolts, which reduces the use of nuts and simplifies the assembly steps. The first lug 112 and the second lug 122122 are stacked in the direction of the flange axis to block each other, thereby preventing the first body 11 and the second body 12 from offsetting. When in use, the screw passing through the bolt hole 102 can further strengthen the fixation of the two bodies.

[0029] Preferably, the number of the first lugs 112 on the first body 11 is two, and the number of the second lugs 122 on the second body 12 is two.

[0030] In this embodiment, a first connecting portion 113 is provided at one end of the first body 11, and a second connecting portion 123 corresponding to the first connecting portion 113 is provided on the second body 12, wherein the first connecting portion 113 and the second connecting portion 123 are fixedly connected by bolts.

[0031] Preferably, there are two first connection parts 113 , which are respectively located at two ends of the first body 11 ; and there are two second connection parts 123 , which are respectively located at two ends of the second body 12 .

[0032] In this embodiment, a third connecting portion 114 is provided at one end of the first body 11 and is located on the first neck 111, and a fourth connecting portion 124 is provided on the second neck 121 and corresponds to the third connecting portion 114, wherein the third connecting portion 114 and the fourth connecting portion 124 are fixedly connected by bolts to increase the clamping effect of the first neck 111 and the second neck 121 to prevent the plastic tube 21 from loosening.

[0033] Preferably, there are two third connection portions 114 , which are respectively located at two ends of the first neck portion 111 ; and there are two fourth connection portions 124 , which are respectively located at two ends of the second neck portion 121 .

[0034] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A flange joint for a plastic pipe, characterized in that: The flange joint comprises a first body and a second body, the first body and the second body are buckled with each other and fixedly connected by bolts, the flange joint is provided with a through hole for being sleeved on a plastic pipe and bolt holes evenly arranged, the flange joint also comprises a first neck arranged on the first body and a second neck arranged on the second body, the first neck and the second neck are buckled with each other for clamping the plastic pipe; the inner wall of the through hole of the flange joint is also provided with a groove for placing a sealing ring.

2. The flange joint of plastic pipe according to claim 1, characterized in that: The inner walls of the first neck and the second neck are provided with a plurality of anti-slip convex patterns, and the plurality of anti-slip convex patterns are in a ring shape and are coaxially arranged with the through hole.

3. The flange joint of plastic pipe according to claim 1, characterized in that: The first body is provided with a first lug, the second body is provided with a second lug corresponding to the first lug, the first lug and the second lug are stacked downward along the flange axis, and at least one bolt hole passes through the first lug and the second lug.

4. The flange joint of plastic pipe according to claim 3, characterized in that: The number of the first lugs on the first body is two, and the number of the second lugs on the second body is two.

5. The flange joint of plastic pipe according to claim 1, characterized in that: A first connecting portion is provided at one end of the first body, and a second connecting portion corresponding to the first connecting portion is provided on the second body, wherein the first connecting portion and the second connecting portion are fixedly connected by bolts.

6. The flange joint of plastic pipe according to claim 5, characterized in that: The number of the first connection parts is two, which are respectively located at two ends of the first body; the number of the second connection parts is two, which are respectively located at two ends of the second body.

7. The flange joint of plastic pipe according to claim 5, characterized in that: A third connection portion located on the first neck is provided at one end of the first body, and a fourth connection portion located on the second neck and corresponding to the third connection portion is provided on the second body, wherein the third connection portion and the fourth connection portion are fixedly connected by bolts.

8. The flange joint of plastic pipe according to claim 7, characterized in that: The number of the third connection parts is two, and they are respectively located at two ends of the first neck; the number of the fourth connection parts is two, and they are respectively located at two ends of the second neck.

Images