Flexible flange joint
By using flexible flange joints at the drainage pipe connection and using a combination design of rubber ring and flange sleeve, the problem of unstable connection of pipes of different materials is solved, rapid docking and efficient sealing are achieved, and construction efficiency and drainage safety are improved.
Patent Information
- Application Number
- CN202420221143.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-01-30
AI Technical Summary
It is difficult to quickly and stably connect drain pipes of different materials in the prior art, especially during the installation of ductile iron drain pipes, there are problems of unstable connections and insufficient pressure resistance.
A flexible flange joint is adopted, including a rubber ring set at the switch pipe socket and a flange sleeve set at the outside of the rubber ring, and a fast docking and sealing of the pipe through a double-sided annular boss and removable fasteners.
It realizes rapid and stable connections of pipes of different materials, and improves construction efficiency and safety and reliability of drainage.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of drainage pipes, and in particular relates to a flexible flange joint. Background Art
[0002] During the installation and use of ductile iron drainage pipes, the problem of pipe conversion is often encountered, which may involve the connection between pipes of different types or specifications, for example, connecting PE pipes with cast iron pipes. In order to ensure the stability and pressure resistance of the connection, the most commonly used is the flange connection method, which requires the use of PE flange heads and rubber gaskets and other accessories. This connection method has high requirements on the flange docking quality of PE pipes, and cannot achieve quick docking and conversion of pipes of different materials. Therefore, a flexible flange joint that can be quickly docked and suitable for pipes of different materials is now needed. Utility Model Content
[0003] The purpose of the utility model is to provide a flexible flange joint, which can be applicable to pipes of different materials, can quickly connect the pipes in a flexible docking manner, is convenient to construct and operate, improves construction efficiency and improves the safety and reliability of drainage.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A flexible flange joint comprises a rubber ring sleeved on a conversion pipe socket and a flange sleeve sleeved on the outside of the rubber ring. Double-sided annular bosses are circumferentially arranged on the front end of the rubber ring. The flange sleeve and the flange pipe to be connected are connected by a detachable fastener and the double-sided annular bosses of the rubber ring are axially matched to extrude the conversion pipe and the flange pipe.
[0006] A further improvement of the technical solution of the utility model is that the double-sided annular boss comprises an inner annular boss located between the conversion pipe socket and the flange pipe and an outer annular boss located between the flange pipe and the flange sleeve.
[0007] A further improvement of the technical solution of the utility model is that the flange pipe and the flange sleeve are connected by a plurality of bolts penetrating the flange plates of the two, an annular limiting groove is circumferentially arranged on the inner ring of the flange sleeve, and the rubber ring is arranged in the annular limiting groove.
[0008] A further improvement of the technical solution of the utility model is that the contact surfaces between the annular limiting groove and the end of the rubber ring are matched to be arranged as an inclined surface or a vertical surface, and the contact surfaces between the flange sleeve and the outer annular boss of the rubber ring are matched to be arranged as an inclined surface or a vertical surface.
[0009] The further improvement of the technical solution of the utility model is that the contact surface between the outer annular boss of the rubber ring and the flange sleeve is an inclined surface, and the contact surface between the end of the rubber ring and the annular limiting groove is an inclined surface.
[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model is: it can be applicable to pipes of different materials, and can quickly connect pipes of different materials by a flexible docking method, which is convenient for construction operation, improves construction efficiency and improves the safety and reliability of drainage.
[0011] Since the utility model adopts a rubber ring with double-sided annular bosses at the end which is easy to disassemble, different rubber rings can be selected and replaced according to different types of conversion pipes, and the conversion pipe and the flange pipe are sealed by axially cooperating and extruding the rubber ring between the flange pipe and the flange sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of the flexible flange joint embodiment 1 of the utility model;
[0013] Figure 2 It is a partial enlarged view of the embodiment 1 of the flexible flange joint of the utility model;
[0014] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the flexible flange joint of the utility model;
[0015] Among them, 1. flange pipe, 2. rubber ring, 2-1. inner annular boss, 2-2. outer annular boss, 3. bolts, 4. flange sleeve, 4-1. annular limit groove, 5. conversion pipe. DETAILED DESCRIPTION
[0016] The present invention is further described in detail below in conjunction with the embodiments:
[0017] Example 1
[0018] like Figure 1 As shown, this embodiment provides a flexible flange joint, including a rubber ring 2 and a flange sleeve 4. The flange sleeve 4 can be tightly sleeved on the socket of the conversion pipe 5 through the rubber ring 2, the rubber ring 2 is sleeved on the socket of the conversion pipe 5, and the flange sleeve 4 is sleeved on the outside of the rubber ring 2. The inner diameter of the flange sleeve 4 is the same as the outer diameter of the rubber ring 2, and the inner diameter of the rubber ring 2 is the same as the outer diameter of the conversion pipe 5. The front end of the rubber ring 2 is circumferentially provided with double-sided annular bosses, and the flange sleeve 4 and the flange pipe 1 to be connected are connected by a detachable fastener. The flange sleeve 4 and the flange pipe 1 can axially cooperate and extrude the double-sided annular bosses of the rubber ring 2 under the action of the fastener, so as to achieve the purpose of circumferentially sealing the conversion pipe 5 and the flange pipe 1. The conversion pipe 5 can be a plastic pipe, a steel pipe, a steel-plastic pipe, etc., and the detachable fastener can be a matching bolt 3 and a nut.
[0019] The front ends of the flange pipe 1 and the flange sleeve 4 are both provided with flange plates, and a number of mounting holes are correspondingly provided on the flange plates of the two. The flange pipe 1 and the flange sleeve 4 are connected by bolts 3 that penetrate the mounting holes on the flange plates of the two, and then fastened by nuts. An annular limiting groove 4-1 is circumferentially provided on the inner ring of the flange sleeve 4, and the rubber ring 2 is provided in the annular limiting groove 4-1 of the flange sleeve 4. The annular limiting groove 4-1 can limit the axial displacement of the rubber ring 2 to make it more secure.
[0020] The double-sided annular boss includes an inner annular boss 2-1 located between the socket of the conversion pipe 5 and the flange pipe 1, and an outer annular boss 2-2 located between the flange pipe 1 and the flange sleeve 4. Under the tightening action of the bolts and nuts, the inner annular boss 2-1 is squeezed by the flange pipe 1 and the conversion pipe 5, and the outer annular boss 2-2 is squeezed by the flange pipe 1 and the flange sleeve 4, thereby achieving the purpose of circumferential sealing between the conversion pipe 5 and the flange pipe 1.
[0021] The contact surfaces between the annular limiting groove 4-1 and the end of the rubber ring 2 are matched to be inclined surfaces, and the contact surfaces between the flange sleeve 4 and the outer annular boss 2-2 of the rubber ring are matched to be inclined surfaces, wherein the contact surface between the outer annular boss 2-2 of the rubber ring 2 and the flange sleeve 4 is an inclined surface, and the contact surface between the end of the rubber ring 2 and the annular limiting groove 4-1 is an inclined surface. By setting the contact surface as an inclined surface, when the flange sleeve 4 and the flange pipe 1 are relatively tightened and compressed, the inclined surface can reduce the compression resistance to a certain extent, so that the rubber ring 2 is easy to match with the annular limiting groove 4-1 of the flange sleeve 4 and the outer annular boss 2-2 of the rubber ring, so as to quickly seal the operation.
[0022] Example 2
[0023] like Figure 2 As shown, the flexible flange joint provided in this embodiment has the same structure and connection mode of other components except the contact surface between the annular limiting groove 4-1 and the end of the rubber ring 2 and the contact surface between the flange sleeve 4 and the outer annular boss 2-2 of the rubber ring. The difference is that the contact surface between the annular limiting groove 4-1 and the end of the rubber ring 2 is set as a vertical surface, and the contact surface between the flange sleeve 4 and the outer annular boss 2-2 of the rubber ring is set as a vertical surface, wherein the contact surface between the outer annular boss 2-2 of the rubber ring 2 and the flange sleeve 4 is a vertical surface, and the contact surface between the end of the rubber ring 2 and the annular limiting groove 4-1 is a vertical surface. By setting the contact surface as a vertical surface, the structure is simpler than the inclined surface, and when the flange sleeve 4 and the flange pipe 1 are relatively tightened to compress the rubber ring 2, the structure of the vertical surface can increase the compression amount of the rubber ring 2, thereby further increasing the sealing performance and stability of the rubber ring 2.
[0024] The utility model can be applicable to pipes of different materials, and adopts a flexible docking method to dock pipes of different materials, which is convenient for construction operation, improves construction efficiency and improves the safety and reliability of drainage.
[0025] Since the rubber ring 2 is easy to disassemble and has double-sided annular bosses, it is easy to select and replace different rubber rings 2 according to the conversion pipe 5. The rubber ring 2 is extruded through the axial cooperation between the flange pipe 1 and the flange sleeve 4, thereby achieving sealing between the conversion pipe 5 and the flange pipe 1.
[0026] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.
Claims
1. A flexible flange joint, characterized in that: The invention comprises a rubber ring (2) sleeved on the socket of a conversion pipe (5) and a flange sleeve (4) sleeved on the outside of the rubber ring (2), wherein a double-sided annular boss is circumferentially arranged at the front end of the rubber ring (2), and the flange sleeve (4) is connected to the flange pipe (1) to be connected via a detachable fastener and axially cooperates with the double-sided annular bosses of the rubber ring (2) to seal the conversion pipe (5) and the flange pipe (1).
2. A flexible flange joint according to claim 1, characterized in that: The double-sided annular boss comprises an inner annular boss (2-1) located between the socket of the conversion pipe (5) and the flange pipe (1), and an outer annular boss (2-2) located between the flange pipe (1) and the flange sleeve (4).
3. A flexible flange joint according to any one of claims 1 or 2, characterized in that: The flange pipe (1) and the flange sleeve (4) are connected by a plurality of bolts (3) penetrating the flange plates of the two. An annular limiting groove (4-1) is circumferentially arranged on the inner ring of the flange sleeve (4), and the rubber ring (2) is arranged in the annular limiting groove (4-1).
4. A flexible flange joint according to claim 3, characterized in that: The contact surfaces between the annular limiting groove (4-1) and the end of the rubber ring (2) are cooperatively arranged as an inclined surface or a vertical surface, and the contact surfaces between the flange sleeve (4) and the outer annular boss (2-2) of the rubber ring are cooperatively arranged as an inclined surface or a vertical surface.
5. A flexible flange joint according to claim 3, characterized in that: The contact surface between the outer annular boss (2-2) of the rubber ring (2) and the flange sleeve (4) is an inclined surface, and the contact surface between the end of the rubber ring (2) and the annular limiting groove (4-1) is an inclined surface.