Plastic-coated steel pipe socket connection structure

Abstract

The plastic-coated steel pipe socket connection structure comprises a first plastic-coated steel pipe, a second plastic-coated steel pipe and an adapting pipe, guide plates are annularly arranged on the inner wall of the adapting pipe at equal intervals, the guide plates are of a U-shaped structure design, openings of the guide plates face downwards, and forward sawtooth plates are fixedly arranged at the top ends of the inner walls of the guide plates. A fixed ring is detachably installed on the outer wall of the second plastic-coated steel pipe, a movable ring is arranged on the outer wall of the fixed ring, and inserting plates are annularly arranged on the inner wall of the fixed ring at equal intervals. Through mutual cooperation of a guide plate, a forward sawtooth plate, a fixed ring, a movable ring, a first adapter shaft, a second assistance rod, an inclined panel, a limiting plate, a second adapter shaft, an insertion plate, a reverse sawtooth block and a torsion spring, on one hand, a worker can conveniently and rapidly connect and fix a first plastic-coated steel pipe and a second plastic-coated steel pipe; and on the other hand, workers can conveniently and rapidly disassemble the first plastic-coated steel pipe and the second plastic-coated steel pipe, and later inspection and maintenance work can be conveniently carried out by the workers.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection, and particularly relates to a plastic-coated steel pipe socket connection structure. Background Art

[0002] Plastic coated steel pipe, also known as plastic coated pipe, steel plastic composite pipe, plastic coated composite steel pipe, is a steel-plastic composite steel pipe with a steel pipe as the base, a plastic anti-corrosion layer is welded on the inner surface of the steel pipe (bottom pipe) through spraying, rolling, dipping, and suction processes, or a plastic anti-corrosion layer is welded on the inner and outer surfaces. Plastic coated steel pipe has excellent corrosion resistance and relatively small friction resistance, and its coating itself also has good electrical insulation and will not produce electrical corrosion.

[0003] At present, plastic-coated steel pipes need to be butt-jointed during construction and installation. During this period, the staff needs to connect the two groups of plastic-coated steel pipes through socket joints. The specific operation is: the staff will insert the socket of one group of pipes into the socket of another group of pipes. After alignment, the seams will be caulked with caulking materials first, and then sealed with filling materials, and finally the joints will be welded with a welding gun to make it a firmly closed whole. However, the use of this rigid socket connection method may increase the difficulty of later disassembly, which may easily bring inconvenience to future inspection and maintenance work. For this reason, a plastic-coated steel pipe socket connection structure is provided. Utility Model Content

[0004] The utility model aims to provide a plastic-coated steel pipe socket connection structure to solve the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a plastic-coated steel pipe socket connection structure, comprising a first plastic-coated steel pipe, a second plastic-coated steel pipe and a socket pipe, the first plastic-coated steel pipe and the second plastic-coated steel pipe are located in corresponding positions, the socket pipe is arranged on the outer wall of the first plastic-coated steel pipe, the inner wall of the socket pipe is annular and has guide plates arranged at equal intervals, the guide plate is designed in a U-shaped structure and opens downward, a forward serrated plate is fixedly arranged on the top of the inner wall of the guide plate, and the outer wall of the second plastic-coated steel pipe is detachably mounted A fixing ring is provided, a movable ring is provided on the outer wall of the fixing ring, and plug plates are provided on the inner wall of the fixing ring in a ring shape with equal intervals, a second adapter shaft is provided on the outer wall of the plug plate at one end of the fixing ring, the plug plate and the fixing ring are rotatably connected through the second adapter shaft, a reverse sawtooth block is fixedly provided on the outer wall of the plug plate at the middle of one end of the forward sawtooth plate, the reverse sawtooth block is hook-shaped, and the reverse sawtooth block is slidably engaged with the forward sawtooth plate, and a torsion spring for resetting and tightening the plug plate is wound around the outer wall of the second adapter shaft.

[0006] Preferably, the receiving tube is connected to the first plastic-coated steel tube, the second plastic-coated steel tube is slidably arranged with the receiving tube, the guide plate is connected to the receiving tube, a sealing ring for sealing the joint is provided at the middle of the inner wall of the receiving tube, the fixing ring is coaxial with the receiving tube, one end of the torsion spring is connected to the plug plate, and the other end of the torsion spring is connected to the fixing ring.

[0007] Preferably, an inclined panel for pressing the plug board is fixedly provided in the middle of the top end of the plug board, the inclined panel is designed in a right-angled triangle structure with the inclined surface facing upward, and a limit plate is provided at the top end of the plug board at the position of the inclined panel, the limit plate is connected to the inclined panel, and the height of the limit plate is the same as the height of the inclined panel.

[0008] Preferably, the outer surface of the fixed ring is twisted with an external thread, the inner surface of the movable ring is twisted with an internal thread, the movable ring and the fixed ring are arranged by threaded engagement, the outside of the movable ring is provided with second booster rods at equal intervals in a ring shape, the bottom of the second booster rod is provided with a first adapter shaft, and the second booster rod is rotatably connected to the movable ring through the first adapter shaft.

[0009] Preferably, an eccentric wheel is provided on the inner wall of the receiving tube between two adjacent groups of guide plates, the eccentric wheel is rotationally connected to the receiving tube via an eccentric shaft, and a first booster rod for driving the eccentric wheel is fixedly provided on the outer wall of the eccentric wheel.

[0010] The plastic coated steel pipe socket connection structure of the utility model has the following advantages:

[0011] 1. The utility model facilitates the staff to quickly connect and fix the first plastic-coated steel pipe and the second plastic-coated steel pipe through the mutual cooperation of the guide plate, the forward serrated plate, the fixed ring, the movable ring, the first transfer shaft, the second assisting rod, the inclined plate, the limit plate, the second transfer shaft, the plug plate, the reverse serrated block and the torsion spring. On the one hand, it facilitates the staff to quickly disassemble the first plastic-coated steel pipe and the second plastic-coated steel pipe, which is convenient for the staff to carry out future inspection and maintenance work.

[0012] 2. The utility model facilitates the staff to perform secondary fixation of the second plastic-coated steel pipe through the mutual cooperation of the eccentric wheel, the eccentric shaft and the first assisting rod, thereby improving the stability of the joint and reducing the probability of loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is an overall planar cross-sectional view of the utility model;

[0016] Figure 3 It is a partial cross-sectional enlarged view of the utility model.

[0017] Explanation of marks in the figure: 1. First plastic-coated steel pipe; 2. Second plastic-coated steel pipe; 3. Receiver tube; 301. Guide plate; 302. Forward serrated plate; 303. Sealing ring; 304. Eccentric wheel; 305. Eccentric shaft; 306. First booster rod; 4. Fixed ring; 401. Movable ring; 402. First transfer shaft; 403. Second booster rod; 404. Inclined panel; 405. Limiting plate; 406. Second transfer shaft; 407. Insert plate; 408. Reverse serrated block; 409. Torsion spring. DETAILED DESCRIPTION

[0018] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0019] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0022] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0023] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of the plastic-coated steel pipe socket connection structure of the utility model in conjunction with the accompanying drawings.

[0024] like Figure 1-3 As shown, a plastic-coated steel pipe socket connection structure of the utility model comprises a first plastic-coated steel pipe 1, a second plastic-coated steel pipe 2 and a socket pipe 3. The first plastic-coated steel pipe 1 corresponds to the second plastic-coated steel pipe 2 in position. The socket pipe 3 is arranged on the outer wall of the first plastic-coated steel pipe 1, and the socket pipe 3 is connected to the first plastic-coated steel pipe 1. The second plastic-coated steel pipe 2 is slidingly arranged with the socket pipe 3. As the prior art, it is not described in detail in this case. In the device, the inner wall of the socket pipe 3 is provided with guide plates 301 at equal intervals in a ring shape. The guide plates 301 are connected to the socket pipe 3. The guide plates 301 are designed in a U-shaped structure and open downward. A forward serrated plate 302 is fixedly provided on the top of the inner wall of the guide plate 301. The socket pipe 3 is provided with a sealing ring 303 for sealing the joint in the middle of the inner wall. The outer wall of the second plastic-coated steel pipe 2 is detachably installed with a fixing ring 4. The fixing ring 4 is coaxial with the socket pipe 3, and a movable ring 401 is provided on the outer wall of the fixing ring 4.

[0025] Specifically, the inner wall of the fixing ring 4 is provided with plug plates 407 in a circular shape at equal intervals, the outer wall of the plug plate 407 is located at one end of the fixing ring 4 and a second adapter shaft 406 is provided for supporting and fixing the plug plate 407, the plug plate 407 is rotatably connected to the fixing ring 4 through the second adapter shaft 406, the outer wall of the plug plate 407 is located at the middle of one end of the forward serrated plate 302 and a reverse serrated block 408 is fixedly provided, the reverse serrated block 408 is hook-shaped, and the reverse serrated block 408 is slidingly engaged with the forward serrated plate 302, the outer wall of the second adapter shaft 406 is wound with a torsion spring 409 for resetting and tightening the plug plate 407, one end of the torsion spring 409 is connected to the plug plate 407, and the other end of the torsion spring 409 is connected to the fixing ring 4.

[0026] Specifically, an inclined panel 404 for pressing the plug plate 407 is fixedly provided at the middle of the top of the plug plate 407, and the inclined panel 404 is designed in a right-angled triangle structure, and the inclined surface faces upward. A limit plate 405 is provided at the top of the plug plate 407 at the position of the inclined panel 404, and the limit plate 405 is connected to the inclined panel 404. The height of the limit plate 405 is the same as that of the inclined panel 404. The outer surface of the fixed ring 4 is twisted with an external thread, and the inner surface of the movable ring 401 is twisted with an internal thread. The movable ring 4 01 is arranged with the fixed ring 4 through threaded engagement, and the outside of the movable ring 401 is provided with second assisting rods 403 in a ring shape with equal intervals, and the bottom of the second assisting rod 403 is provided with a first adapter shaft 402, and the second assisting rod 403 is rotatably connected with the movable ring 401 through the first adapter shaft 402, so that the staff can rotate the movable ring 401, and cooperate with the inclined plate 404 and the limit plate 405 to press the plug plate 407 downward, so as to make the reverse serrated block 408 disengage from the forward serrated plate 302.

[0027] Furthermore, an eccentric wheel 304 is provided on the inner wall of the receiving tube 3 between two adjacent groups of guide plates 301 for applying pressure to the second plastic-coated steel tube 2. The eccentric wheel 304 is rotationally connected to the receiving tube 3 via an eccentric shaft 305. A first booster rod 306 for driving the eccentric wheel 304 is fixedly provided on the outer wall of the eccentric wheel 304.

[0028] According to the above, the utility model, through the mutual cooperation of the guide plate 301, the forward serrated plate 302, the fixed ring 4, the movable ring 401, the first adapter shaft 402, the second booster rod 403, the inclined plate 404, the limit plate 405, the second adapter shaft 406, the plug plate 407, the reverse serrated block 408 and the torsion spring 409, on the one hand, facilitates the staff to quickly connect and fix the first plastic-coated steel pipe 1 and the second plastic-coated steel pipe 2, and on the other hand, facilitates the staff to quickly disassemble the first plastic-coated steel pipe 1 and the second plastic-coated steel pipe 2, which is convenient for the staff to carry out future inspection and maintenance work; the utility model, through the mutual cooperation of the eccentric wheel 304, the eccentric shaft 305 and the first booster rod 306, facilitates the staff to perform secondary fixation of the second plastic-coated steel pipe 2, improves the stability of the joint, and reduces the probability of loosening.

[0029] 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 plastic-coated steel pipe socket connection structure, comprising a first plastic-coated steel pipe (1), a second plastic-coated steel pipe (2) and a socket pipe (3), wherein the first plastic-coated steel pipe (1) corresponds to the second plastic-coated steel pipe (2), and the socket pipe (3) is arranged on the outer wall of the first plastic-coated steel pipe (1), characterized in that: The inner wall of the receiving tube (3) is provided with guide plates (301) in an annular shape and at equal intervals. The guide plates (301) are designed in a U-shaped structure and open downward. A forward serrated plate (302) is fixedly provided at the top of the inner wall of the guide plate (301). A fixing ring (4) is detachably installed on the outer wall of the second plastic-coated steel tube (2). A movable ring (401) is provided on the outer wall of the fixing ring (4). Insert plates (407) are provided on the inner wall of the fixing ring (4) in an annular shape and at equal intervals. The outer wall of the insert plates (407) is located at the fixing ring (4). A second transfer shaft (406) is provided at one end, and the plug plate (407) is rotatably connected to the fixing ring (4) via the second transfer shaft (406). A reverse sawtooth block (408) is fixedly provided on the outer wall of the plug plate (407) at the middle of one end of the forward sawtooth plate (302). The reverse sawtooth block (408) is hook-shaped and slidably engaged with the forward sawtooth plate (302). A torsion spring (409) for resetting and tightening the plug plate (407) is wound around the outer wall of the second transfer shaft (406).

2. The plastic-coated steel pipe socket connection structure according to claim 1, characterized in that: The receiving tube (3) is connected to the first plastic-coated steel tube (1), the second plastic-coated steel tube (2) is slidably arranged with the receiving tube (3), the guide plate (301) is connected to the receiving tube (3), a sealing ring (303) for sealing the joint is arranged in the middle of the inner wall of the receiving tube (3), the fixing ring (4) is coaxial with the receiving tube (3), one end of the torsion spring (409) is connected to the plug plate (407), and the other end of the torsion spring (409) is connected to the fixing ring (4).

3. The socket connection structure of a plastic-coated steel pipe according to claim 1, characterized in that: A slanted panel (404) for pressing the plugging plate (407) is fixedly arranged at the middle of the top end of the plugging plate (407); the slanted panel (404) is designed in a right-angled triangle structure with the slanted surface facing upwards; a limit plate (405) is arranged at the top end of the plugging plate (407) at the position of the slanted panel (404); the limit plate (405) is connected to the slanted panel (404); and the height of the limit plate (405) is the same as that of the slanted panel (404).

4. The socket connection structure of a plastic-coated steel pipe according to claim 3, characterized in that: The outer surface of the fixed ring (4) is twisted with an external thread, and the inner surface of the movable ring (401) is twisted with an internal thread. The movable ring (401) and the fixed ring (4) are arranged by thread engagement. The outer part of the movable ring (401) is provided with second booster rods (403) at equal intervals in a ring shape. The bottom of the second booster rod (403) is provided with a first adapter shaft (402). The second booster rod (403) and the movable ring (401) are rotatably connected via the first adapter shaft (402).

5. The plastic-coated steel pipe socket connection structure according to claim 1, characterized in that: An eccentric wheel (304) is disposed on the inner wall of the receiving tube (3) between two adjacent groups of guide plates (301); the eccentric wheel (304) is rotationally connected to the receiving tube (3) via an eccentric shaft (305); and a first booster rod (306) for driving the eccentric wheel (304) is fixedly disposed on the outer wall of the eccentric wheel (304).

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