Plastic-lined steel pipe connecting mechanism

Abstract

The utility model provides a plastic-lined steel pipe connecting mechanism, and relates to the technical field of steel pipe connection, the plastic-lined steel pipe connecting mechanism comprises a connecting steel pipe and a locking auxiliary fixed connecting mechanism, one side of the connecting steel pipe is provided with the locking auxiliary fixed connecting mechanism, when the plastic-lined steel pipe connecting mechanism is used, a plastic-lined steel pipe flange is connected to a connecting flange on one side of the connecting steel pipe; after the plastic-lined steel pipe is in threaded connection, the adjustable auxiliary locking assembly on one side is arranged by lowering the adjustable rotating shaft and attaching the adjustable rotating shaft to the plastic-lined steel pipe, and the plastic-lined steel pipe and the adjustable rotating shaft are correspondingly provided with fixing lantern rings; according to the plastic-lined steel pipe secondary fixing and locking device, the telescopic fixing sleeve rods at the two ends of the adjustable rotating shaft can be connected to the inner sides of the fixing sleeve rings in a sleeving mode to be fixed, so that the plastic-lined steel pipe is secondarily fixed and locked, the inner wall hardening strips are evenly adhered to the inner wall of the connecting steel pipe, and when liquid is conveyed, the inner wall hardening strips can well reduce vibration generated in the conveying process.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe connecting technical field especially relates to a plastic lining steel pipe connecting mechanism. BACKGROUND

[0002] In many industrial and civil fields, such as chemical industry, water supply and drainage, building, etc., pipelines need to transport various corrosive media, and ordinary steel pipes are easily corroded, resulting in shortened service life of the pipeline, increased maintenance cost, and even safety problems such as leakage. The plastic lining steel pipe combines plastic lining with steel pipe and uses the corrosion resistance of plastic to protect the steel pipe. However, the traditional steel pipe connection method cannot be directly applied to plastic lining steel pipes, and a special connecting mechanism is needed to ensure the sealing and corrosion resistance of the connection part. Traditional steel pipe connection technologies such as welding and threaded connection have many problems when applied to plastic lining steel pipes. Welding may damage the plastic lining, and threaded connection may result in poor sealing or insecure connection due to the properties of plastic. Therefore, new connecting mechanisms and technologies need to be developed to overcome the shortcomings of traditional connection methods and meet the connection needs of plastic lining steel pipes.

[0003] However, the existing plastic lining steel pipe connection methods are usually clamp connection and flange connection. Clamp connection is prone to looseness under the action of external forces such as pipeline vibration and water flow impact. Once the clamp is loose, the tightness of the connection will be affected. The centering accuracy of flange connection is relatively high. If the flange is installed with deviation, it will lead to loose connection and increase the possibility of leakage. Moreover, some connecting mechanisms need to strictly control the tightening torque during installation. Too large or too small torque may affect the connection quality.

[0004] Therefore, we provide a plastic lining steel pipe connecting mechanism to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a plastic lining steel pipe connecting mechanism to solve the problems raised in the background technology.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a plastic lining steel pipe connecting mechanism, comprising a connecting steel pipe and a locking auxiliary fixing connecting mechanism, one side of the connecting steel pipe is provided with the locking auxiliary fixing connecting mechanism;

[0007] The locking auxiliary fixing connecting mechanism comprises a fixed locking assembly, a fixed connecting assembly, and an adjustable auxiliary locking assembly. The outer wall of the connecting steel pipe is provided with the fixed locking assembly. One side of the connecting steel pipe is fixedly connected with the fixed connecting assembly. One side of the fixed locking assembly is provided with the adjustable auxiliary locking assembly.

[0008] Preferably, the fixed locking assembly comprises a fixed collar, a fixed shaft and a fixed hinge, the outer side of the connecting steel pipe is fixedly connected with the fixed collar, the inner side of the fixed collar is fixedly connected with the fixed shaft, and the surface of the fixed shaft is fixedly connected with the fixed hinge.

[0009] Preferably, the fixed connecting assembly comprises a connecting flange, a sleeved threaded hole, a reserved sleeve hole and an inner wall hardening strip, one side of the connecting steel pipe is fixedly connected with the connecting flange, the surface of the connecting flange is provided with the sleeved threaded hole, one side of the sleeved threaded hole is provided with the reserved sleeve hole, and the inner wall of the connecting steel pipe is fixedly connected with the inner wall hardening strip.

[0010] Preferably, the adjustable auxiliary locking assembly comprises a rotating shaft, an adjustable rotating shaft and telescopic fixed sleeve rods, the other side of the fixed hinge is movably sleeved with the rotating shaft, one side of the rotating shaft is fixedly connected with the adjustable rotating shaft, and both ends of the adjustable rotating shaft are fixedly connected with the telescopic fixed sleeve rods.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] Through the setting of the locking auxiliary fixed connecting mechanism, when the plastic-lined steel pipe flange is connected to the connecting flange on one side of the connecting steel pipe and is fixedly connected through threads, after the plastic-lined steel pipe is threadedly connected, the adjustable auxiliary locking assembly on one side is set by lowering the adjustable rotating shaft and abutting against the plastic-lined steel pipe, and the plastic-lined steel pipe and the adjustable rotating shaft are correspondingly provided with the fixed collar, so that the telescopic fixed sleeve rods at both ends of the adjustable rotating shaft are sleeved in the inner side of the fixed collar to be fixed, thereby the plastic-lined steel pipe is secondarily fixed and locked, and the inner wall of the connecting steel pipe is uniformly bonded with the inner wall hardening strip, so that the inner wall hardening strip can well reduce the vibration generated in the transmission process when the liquid is transmitted. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an overall appearance structure schematic view of the utility model;

[0014] Figure 2 It is an overall appearance left side structure schematic view of the utility model;

[0015] Figure 3 It is an overall appearance left side and internal structure schematic view of the utility model;

[0016] Figure 4 It is an overall appearance left side and internal structure schematic view of the utility model; Figure 2 It is an A place enlarged structure schematic view of the utility model;

[0017] The figure label: 1, connecting steel pipe; 2, locking auxiliary fixed connecting mechanism; 21, fixed locking assembly; 211, fixed sleeve ring; 212, fixed shaft; 213, fixed hinge; 22, fixed connecting assembly; 221, connecting flange; 222, sleeve threaded hole; 223, reserved sleeve hole; 224, inner wall hardening strip; 23, adjustable auxiliary locking assembly; 231, rotating shaft; 232, adjustable rotating shaft; 233, telescopic fixed sleeve rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a plastic-lined steel pipe connecting mechanism, including connecting steel pipe 1 and locking auxiliary fixed connecting mechanism 2, the side of connecting steel pipe 1 is provided with locking auxiliary fixed connecting mechanism 2;

[0020] Locking auxiliary fixed connecting mechanism 2 includes fixed locking assembly 21, fixed connecting assembly 22 and adjustable auxiliary locking assembly 23, the outer wall of connecting steel pipe 1 is provided with fixed locking assembly 21, the side of connecting steel pipe 1 is fixedly connected with fixed connecting assembly 22, the side of fixed locking assembly 21 is provided with adjustable auxiliary locking assembly 23.

[0021] Further, fixed locking assembly 21 includes fixed sleeve ring 211, fixed shaft 212 and fixed hinge 213, the outer side of connecting steel pipe 1 is fixedly connected with fixed sleeve ring 211, the inner side of fixed sleeve ring 211 is fixedly connected with fixed shaft 212, the surface of fixed shaft 212 is fixedly connected with fixed hinge 213, in use, fixed hinge 213 penetrates reserved sleeve hole 223 and is movably connected with adjustable auxiliary locking assembly 23 of the other end, and the rotation angle adjustment of adjustable rotating shaft 232 is realized.

[0022] Further, fixed connecting assembly 22 includes connecting flange 221, sleeve threaded hole 222, reserved sleeve hole 223 and inner wall hardening strip 224, the side of connecting steel pipe 1 is fixedly connected with connecting flange 221, the surface of connecting flange 221 is provided with sleeve threaded hole 222, the side of sleeve threaded hole 222 is provided with reserved sleeve hole 223, the inner wall of connecting steel pipe 1 is fixedly connected with inner wall hardening strip 224, by being adhered with multiple inner wall hardening strips 224 in the inner wall of connecting steel pipe 1, when liquid flows, the vibration generated in the flow process can be well reduced.

[0023] Further, the adjustable auxiliary locking assembly 23 comprises a rotating shaft 231, an adjustable rotating shaft 232 and an expansion fixed sleeve rod 233, one side of the rotating shaft 231 is movably sleeved with the other side of the fixed hinge 213, one side of the rotating shaft 231 is fixedly connected with the adjustable rotating shaft 232, and both ends of the adjustable rotating shaft 232 are fixedly connected with the expansion fixed sleeve rod 233.

[0024] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A plastic-lined steel pipe connecting mechanism comprising a connecting steel pipe (1) and a locking auxiliary fixed connecting mechanism (2), characterized in that: One side of the connecting steel pipe (1) is provided with a locking auxiliary fixing and connecting mechanism (2); The locking auxiliary fixing and connecting mechanism (2) comprises a fixed locking assembly (21), a fixed connecting assembly (22) and an adjustable auxiliary locking assembly (23), the outer wall of the connecting steel pipe (1) is provided with the fixed locking assembly (21), one side of the connecting steel pipe (1) is fixedly connected with the fixed connecting assembly (22), and one side of the fixed locking assembly (21) is provided with the adjustable auxiliary locking assembly (23).

2. A plastic-lined steel pipe coupling according to claim 1, wherein The fixed locking assembly (21) comprises a fixed sleeve ring (211), a fixed shaft (212) and a fixed hinge (213), the outer side of the connecting steel pipe (1) is fixedly connected with the fixed sleeve ring (211), the inner side of the fixed sleeve ring (211) is fixedly connected with the fixed shaft (212), and the surface of the fixed shaft (212) is fixedly connected with the fixed hinge (213).

3. A plastic-lined steel pipe coupling according to claim 1 wherein: The fixed connecting assembly (22) comprises a connecting flange (221), a sleeved threaded hole (222), a reserved sleeve hole (223) and an inner wall hardening strip (224), one side of the connecting steel pipe (1) is fixedly connected with the connecting flange (221), the surface of the connecting flange (221) is provided with the sleeved threaded hole (222), one side of the sleeved threaded hole (222) is provided with the reserved sleeve hole (223), and the inner wall of the connecting steel pipe (1) is fixedly connected with the inner wall hardening strip (224).

4. A plastic-lined steel pipe coupling according to claim 2 wherein: The adjustable auxiliary locking assembly (23) comprises a rotating shaft (231), an adjustable rotating shaft (232) and an extension fixing sleeve rod (233), the other side of the fixed hinge (213) is movably sleeved with the rotating shaft (231), one side of the rotating shaft (231) is fixedly connected with the adjustable rotating shaft (232), and both ends of the adjustable rotating shaft (232) are fixedly connected with the extension fixing sleeve rod (233).

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