Sealing connecting piece for steel-plastic composite pipe

Abstract

The utility model discloses a sealed connecting piece for a steel-plastic composite pipe, which belongs to the technical field of steel-plastic composite pipes and comprises a main pipeline, one end of the main pipeline is connected with a fixed connecting piece, one side of the fixed connecting piece is connected with an elastic connecting piece, and the elastic connecting piece comprises an outer connecting sleeve. And the inner wall of the outer connecting sleeve is connected with a second joining sleeve. According to the connecting piece, the clamping ring part of the outer connecting sleeve is combined with the butt joint sleeve in an inserted mode, the second connecting sleeve and the first connecting sleeve are kept communicated, each set of clamping groove holes formed in the clamping ring are aligned with the lock head in position, and during installation, the lock head can be inserted into the clamping groove holes to be rotated and aligned only by pulling the handle frame to slide and retract the telescopic ring. After the telescopic ring is reset in cooperation with the spring, the insertion pile on the surface of the telescopic ring and the lock head are secondarily locked to keep stable connection, during unlocking, the insertion pile can be unlocked only by sliding in cooperation with the telescopic ring again, the insertion pile can be rapidly disassembled by rotating the insertion pile, and follow-up maintenance and replacement operation of a pipeline structure is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel plastic composite pipe technical field, specifically is a sealed connecting piece for steel plastic composite pipe. BACKGROUND

[0002] Steel plastic composite pipe is a new type of composite pipe material, it combines the advantages of steel and plastic, has unique structural characteristics, this kind of pipe material is based on steel pipe, is combined with plastic material through corresponding technology and forms, usually, the inner wall of steel plastic composite pipe adopts high density polyethylene, polyvinyl chloride or other special plastic material, the outer layer is by carbon steel, stainless steel and so on metal material constitutes, and steel plastic composite pipe connecting piece is the connecting accessory specially designed for steel plastic composite pipe, its main function includes connecting pipe section, provides sealing effect and bears the pressure in pipeline system, ensures the safe operation of pipeline, these connecting pieces are widely used in the occasion needing to bear higher pressure, corrosive medium or high temperature environment, such as petroleum chemical industry, municipal water supply, heating ventilation air conditioning and so on.

[0003] China patent network (patent publication number CN220980612U) discloses a kind of composite pipe connecting piece, including front pipe body, connecting sleeve, front flange, front air groove, front air hole, front air groove, front air hole and front sealing ring, the rear side wall of the front pipe body is fixedly connected with connecting sleeve, the rear side wall of the connecting sleeve is fixedly connected with front flange, the rear side wall of the front flange is provided with front air groove and front air hole.

[0004] In the above connecting piece, the composite pipe material at both ends is screw-connected inside front pipe body and rear pipe body, and air sealing is carried out on the pipeline by using large sealing ring, which not only protects the overall structure of the composite pipe, but also has better sealing effect.Although the air-tightness connection is used to increase the sealing property of the overall connecting piece when used for pipeline butt joint, the threads and flanges need to be removed multiple times during installation and removal, which is complicated to operate, and is very inconvenient during pipeline replacement or maintenance in the later period, therefore, we propose a kind of sealed connecting piece for steel plastic composite pipe. UTILITY MODEL CONTENTS

[0005] The content part of the present application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part.The content part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] The utility model aims at providing a kind of sealed connecting piece for steel plastic composite pipe, to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical scheme: a sealed connecting piece for steel -plastic composite pipe, connecting piece is connected with the fixed connecting piece in one end of main pipeline, and the one side of fixed connecting piece is connected with elastic connecting piece, elastic connecting piece includes outer connecting sleeve, the inner wall of outer connecting sleeve is connected with second adapter sleeve, one end of second adapter sleeve is connected with second pipeline, the outer wall of the other end of second adapter sleeve is pasted with snap ring all around, the outer wall of snap ring is equipped with snap groove hole all around, the inside of outer connecting sleeve is provided with telescopic ring, and the outer wall of telescopic ring is provided with stake all around, the inner wall of telescopic ring is distributed with spring all around, and the inner wall both ends of telescopic ring is connected with handle frame.

[0008] Further, the telescopic ring forms an elastic sliding structure with the outer connecting sleeve through the spring and the handle frame, and the stakes are annularly distributed along the outer wall of the telescopic ring.

[0009] Further, the outer connecting sleeve is fixedly connected with the snap ring, and the snap groove hole is arc-shapedly formed along the outer wall of the snap ring.

[0010] Further, the main pipeline comprises a first pipeline, and the first pipeline is connected with a first adapter sleeve at one end, the inner wall of the first adapter sleeve is pasted with a rubber coating layer, and the first adapter sleeve is connected with a fixed connecting piece at one end.

[0011] Further, the first adapter sleeve is integrally fixed with the fixed connecting piece, and the first adapter sleeve is fixedly connected with the first pipeline at one end through the rubber coating layer.

[0012] Further, the fixed connecting piece comprises a butt joint sleeve, the inner wall of the butt joint sleeve is pasted with a rubber ring, the inner wall of the rubber ring is pasted with a plug-in sleeve, the butt joint sleeve is distributed with stakes all around at one side, the one end of the stake is connected with a lock head, the outer wall of the lock head is formed with an inner groove, and the position of the lock head is aligned with the position of the snap groove hole.

[0013] Further, the lock head is fixedly connected with the butt joint sleeve through the stake, and the lock head is buckled with the inner wall of the snap groove hole.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The connecting piece is combined by the snap ring part of the outer connecting sleeve and the butt joint sleeve plug-in, so that the second adapter sleeve and the first adapter sleeve remain through, and each group of snap groove holes formed in the snap ring is aligned with the position of the lock head. During installation, the telescopic ring is slid into the telescopic ring by pulling the handle frame, the lock head is inserted into the snap groove hole and rotated to be aligned, the telescopic ring is reset by cooperating with the spring, the surface stake of the telescopic ring is locked with the lock head again to keep the connection stable, and during unlocking, the stake is unlocked by sliding the telescopic ring again, and the connecting piece can be quickly removed by rotating, which is convenient for subsequent maintenance and replacement of the pipeline structure.

[0016] The connecting piece is fixedly connected with the fixed connecting piece through the first connecting sleeve part of the first pipe, and is fixedly connected with the first pipe through the glue layer on the inner wall of the first connecting sleeve, so that the structural connection is stable and the airtightness during use of the connecting piece is maintained.

[0017] The connecting piece is formed by the combination of the butt joint sleeve and the outer connecting sleeve, the plug-in sleeve fixed around the butt joint sleeve is plugged into the inner cavity of the outer connecting sleeve, the internal through hole after the pipe connection is maintained, and the lock head connected by the clamping pile is buckled when the butt joint is performed, the plug-in sleeves are respectively inserted into the inner grooves, the structural connection is stable. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of a three-dimensional structure of a main pipe of the utility model;

[0019] Figure 2 It is a schematic diagram of a three-dimensional structure of a fixed connecting piece of the utility model;

[0020] Figure 3 It is a schematic diagram of a three-dimensional structure of an elastic connecting piece of the utility model;

[0021] Figure 4 It is a schematic diagram of a three-dimensional structure of an outer connecting sleeve of the elastic connecting piece of the utility model;

[0022] Figure 5 It is a schematic diagram of an internal structure of the outer connecting sleeve from the side.

[0023] In the drawings: 1, main pipe; 101, first pipe; 102, first connecting sleeve; 103, glue layer; 2, fixed connecting piece; 201, butt joint sleeve; 202, rubber ring; 203, plug-in sleeve; 204, clamping pile; 205, lock head; 206, inner groove; 3, elastic connecting piece; 301, outer connecting sleeve; 302, second connecting sleeve; 303, second pipe; 304, clamping ring; 305, clamping slot hole; 306, telescopic ring; 307, plug-in pile; 308, spring; 309, handle frame. DETAILED DESCRIPTION

[0024] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms, and should not be interpreted as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes, and are not intended to limit the scope of protection of the present disclosure.

[0025] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0026] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0027] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] This utility model provides, for example Figures 1-5 The sealing connector for a steel-plastic composite pipe shown includes a main pipe 1, a fixed connector 2 connected to one end of the main pipe 1, and an elastic connector 3 connected to one side of the fixed connector 2. The main pipe 1 includes a first pipe 101, and a first connecting sleeve 102 connected to one end of the first pipe 101. An adhesive layer 103 is attached to the inner wall of the first connecting sleeve 102, and the fixed connector 2 is connected to one end of the first connecting sleeve 102.

[0030] To ensure a stable connection between the connectors, such as Figure 1 As shown, this connector is integrally fixed to the fixed connector 2 through the first connecting sleeve 102 part of the first pipe 101. It can be connected and fixed to the first pipe 101 through the adhesive layer 103 on the inner wall of the first connecting sleeve 102, thereby maintaining the structural connection stability and the airtightness during the connection and use of the connector.

[0031] like Figure 2 As shown, the fixed connector 2 includes a mating sleeve 201, and a rubber ring 202 is attached to the inner wall of the mating sleeve 201. A plug sleeve 203 is attached to the inner wall of the rubber ring 202. A locking pin 204 is distributed around one side of the mating sleeve 201. A lock head 205 is connected to one end of the locking pin 204. An inner groove 206 is opened on the outer wall of the lock head 205. The position of the lock head 205 is aligned with the position of the slot hole 305.

[0032] To maintain a quick and stable connection with the section of the elastic connector 3, such as Figure 2As shown, the connecting piece is formed by the combination of the butt joint sleeve 201 and the outer connecting sleeve 301. The plug-in sleeve 203 fixed around the butt joint sleeve 201 is inserted into the inner cavity of the outer connecting sleeve 301 to keep the internal through connection after the pipeline connection. The lock head 205 connected by the clamping pile 204 can be buckled with the insertion of each into the inner recess 206 during butt joint to keep the structure connection stable.

[0033] As shown in the figure, Figures 3-5 The elastic connecting piece 3 includes an outer connecting sleeve 301, the inner wall of which is connected with a second connecting sleeve 302. One end of the second connecting sleeve 302 is connected with a second pipeline 303. The outer wall of the other end of the second connecting sleeve 302 is attached with a clamping ring 304. The outer wall of the clamping ring 304 is provided with a clamping groove hole 305. The inner part of the outer connecting sleeve 301 is provided with an expansion ring 306. The outer wall of the expansion ring 306 is provided with a plug pile 307. The inner wall of the expansion ring 306 is distributed with a spring 308. The inner wall of the expansion ring 306 is connected with a handle frame 309 at both ends.

[0034] Finally, in order to facilitate the disassembly and installation, while keeping the connection stable, as shown in the figure, Figures 3-5 The connecting piece is combined by the plug-in of the clamping ring 304 part of the outer connecting sleeve 301 and the butt joint sleeve 201, so that the second connecting sleeve 302 and the first connecting sleeve 102 keep through. Each group of clamping groove holes 305 opened by the clamping ring 304 is aligned with the position of the lock head 205. During installation, only need to pull the handle frame 309 to slide the expansion ring 306 into the inner part, then the lock head 205 can be inserted into the clamping groove hole 305 and rotated to the right position. After the expansion ring 306 is reset by the spring 308, the plug pile 307 on the surface of the expansion ring 306 and the lock head 205 are locked again to keep the connection stable. When unlocking, only need to slide the expansion ring 306 again to unlock the plug pile 307, and then rotate it to quickly disassemble, which is convenient for the subsequent maintenance and replacement of the pipeline structure.

[0035] In summary, in use, the connecting piece is first inserted into the insertion sleeve 203 of the counter sleeve 201 through the outer connecting sleeve 301. In the insertion process, the user first inserts the clamping pile 204 and the connected lock head 205 of the counter sleeve 201 into the clamping groove hole 305 of the outer connecting sleeve 301. At the same time, the user can pull the handle frame 309 at the rear end of the outer connecting sleeve 301, and the telescopic ring 306 connected to the handle frame 309 is slidably contracted along the inner wall of the outer connecting sleeve 301. Then, the outer connecting sleeve 301 is rotated around the second connecting sleeve 302, so that the clamping groove hole 305 of the outer connecting sleeve 301 is rotationally locked with the lock head 205. Then, the handle frame 309 is loosened, and the telescopic ring 306 is reset by the elastic force of the spring 308. The groups of insertion piles 307 on the surface of the telescopic ring 306 are clamped with the groups of inner grooves 206 on the surface of the lock head 205, so as to realize secondary locking. At this time, the installation and counter-insertion process is completed. When disassembling, the outer connecting sleeve 301 is directly reversed and rotated by pulling out the handle frame 309 again, so that the disassembly and disconnection process is quickly completed.

[0036] The above description is only some of the preferred embodiments of the present disclosure and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the application involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the above inventive concept. For example, the above features are replaced with the technical features disclosed in the embodiments of the present disclosure (but not limited to) having similar functions to form technical solutions.

Claims

1. A sealed connection for steel-plastic composite pipes, comprising a main pipe (1), characterized in that: One end of the main pipeline (1) is connected with a fixed connecting piece (2), one side of the fixed connecting piece (2) is connected with an elastic connecting piece (3), the elastic connecting piece (3) comprises an outer connecting sleeve (301), the inner wall of the outer connecting sleeve (301) is connected with a second connecting sleeve (302), one end of the second connecting sleeve (302) is connected with a second pipeline (303), the outer wall of the other end of the second connecting sleeve (302) is attached with a clamping ring (304), the outer wall of the clamping ring (304) is provided with a clamping groove hole (305), the inside of the outer connecting sleeve (301) is provided with an elastic ring (306), the outer wall of the elastic ring (306) is provided with a plug (307), the inner wall of the elastic ring (306) is distributed with a spring (308), and the inner wall of the elastic ring (306) is connected with a handle frame (309) at both ends.

2. A sealed fitting for a steel-plastic composite pipe according to claim 1, characterized in that: The elastic ring (306) is connected with the outer connecting sleeve (301) through the spring (308) and the handle frame (309) to form an elastic sliding structure, and the plug (307) is distributed along the outer wall of the elastic ring (306) in a ring shape.

3. The sealed fitting for a steel-plastic composite pipe according to claim 1, characterized in that: The outer connecting sleeve (301) is fixedly connected with the clamping ring (304), and the clamping groove hole (305) is arc-shapedly provided along the outer wall of the clamping ring (304).

4. The sealed fitting for a steel-plastic composite pipe according to claim 1, characterized in that: The main pipeline (1) comprises a first pipeline (101), one end of the first pipeline (101) is connected with a first connecting sleeve (102), the inner wall of the first connecting sleeve (102) is attached with a rubber coating layer (103), and one end of the first connecting sleeve (102) is connected with the fixed connecting piece (2).

5. A sealed fitting for a steel-plastic composite pipe according to claim 4, characterized in that: The first connecting sleeve (102) is fixedly connected with the fixed connecting piece (2), and the first connecting sleeve (102) is fixedly connected with the first pipeline (101) through the rubber coating layer (103).

6. The sealed fitting for a steel-plastic composite pipe according to claim 1, characterized in that: The fixed connecting piece (2) comprises a butt sleeve (201), the inner wall of the butt sleeve (201) is attached with a rubber ring (202), the inner wall of the rubber ring (202) is attached with a plug sleeve (203), the outer wall of the butt sleeve (201) is distributed with a clamping pile (204) on one side, one end of the clamping pile (204) is connected with a lock head (205), the outer wall of the lock head (205) is provided with an inner groove (206), and the position of the lock head (205) is aligned with the position of the clamping groove hole (305).

7. A sealed fitting for a steel-plastic composite pipe according to claim 6, characterized in that: The lock head (205) is fixedly connected with the butt sleeve (201) through the clamping pile (204), and the lock head (205) is buckled with the inner wall of the clamping groove hole (305).

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