Pipeline connecting device

Abstract

The utility model relates to the technical field of pipeline connection, and discloses a pipeline connecting device which comprises a left fixing pipe, and the outer surface of the left fixing pipe is in threaded connection with a left inner threaded pipe. The sealing assembly is arranged, after two sections of water pipes to be butted are inserted into the left fixing pipe and the right fixing pipe respectively, the left inner threaded pipe and the right inner threaded pipe are rotated, the interior of the air bag can be pressurized, the surface of the air bag is attached to the outer surface of the pipeline in a sealed mode due to strong pressure in a sealing cavity, and meanwhile when a sealing plate slides, the air bag is prevented from being blocked. The sealing rod drives the sliding column to slide, the positioning rod slides in the direction close to the pipeline through connection of the positioning block and the limiting block till the end face of the positioning rod pierces the surface of the pipeline, the firmness of the left inner threaded pipe or the right fixing pipe connected with the pipeline can be improved, and the structural stability of the whole water conveying system is guaranteed; and the problems of leakage, interruption of water supply and the like caused by loose connection are reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and more specifically to pipeline connection devices. Background Technology

[0002] As a device that enables rapid, convenient and reliable connection between water pipelines, the quick-connect mechanism for water pipelines is most commonly found in the ferrule type. Its working principle is that by tightening the nut on the ferrule, the cutting edge inside the ferrule cuts into the outer wall of the pipe and simultaneously compresses the sealing gasket, thereby achieving the effect of sealing and fixing.

[0003] However, in actual use, many factors will affect it over time. On the one hand, the continuous pressure impact of the water flow in the pipeline, as well as the slight vibration of the pipeline itself, keep the blade in contact with and under force against the outer wall of the pipeline, resulting in relative friction. This repeated friction over a long period makes both surfaces increasingly smooth, ultimately reducing the friction between them. On the other hand, the sealing gasket is under constant compression, which gradually weakens its internal elasticity and causes a certain degree of permanent deformation. With these changes, the sealing gasket's... The reaction force applied by the cutting edge will also decrease, resulting in a much weaker clamping force between the cutting edge and the outer wall of the pipe compared to the initial installation. Consequently, the friction between the two also decreases. When the water pressure is too high, the joint clamping the pipe is prone to detachment, which reduces the reliability of the entire water supply pipeline system. Problems such as loosening and leakage occur frequently. The docking mechanism, which could originally be used normally for a long time, is also prone to premature failure due to these repeated problems and has to be replaced. As a result, the life cycle cost of the entire water supply system is increased, which is also extremely detrimental to the long-term stable operation of the system. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pipeline connection device to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a pipeline connection device, including a left fixed pipe, a left internal threaded pipe threaded to the outer surface of the left fixed pipe, a rotating ring rotatably connected to the outer surface of the left fixed pipe, a threaded ring fixedly connected to the surface of the rotating ring, a right fixed pipe attached to the end face of the left fixed pipe, a right internal threaded pipe threaded to the outer surface of the right fixed pipe, and a sealing component installed inside both the left internal threaded pipe and the right internal threaded pipe;

[0006] The sealing assembly includes a sealing cavity formed inside the left fixed tube. A sealing plate is sealed inside the sealing cavity. A vent pipe communicating with the inside of the sealing cavity is fixedly connected inside the left fixed tube. Sealing rods are fixedly connected at equal intervals on the surface of the sealing plate. A sliding column is fixedly connected to the end face of the sealing rod away from the sealing plate. A limit rod is installed through the inside of the sliding column. A positioning groove is formed on the inner wall of the left internally threaded tube. A communicating pipe communicating with the inside of the sealing cavity is fixedly connected inside the left fixed tube. An airbag is fixedly installed on the inner wall of the left fixed tube. A sliding rod is fixedly connected to the surface of the sliding column away from the sealing rod. A positioning block is fixedly connected to the end face of the sliding rod away from the sliding column. A limit block is slidably connected inside the left fixed tube. A positioning rod is fixedly connected to the end face of the limit block.

[0007] Furthermore, sealing gaskets are fixedly connected to the opposite surfaces of the left and right fixed tubes, and protrusions are fixedly connected at equal intervals to the inner walls of the left and right fixed tubes. The inner wall of the threaded ring is threadedly connected to the outer surface of the right fixed tube.

[0008] Furthermore, both the sealing plate and the sealing cavity are annular. The end of the sealing cavity away from the sliding column is connected to the outside of the left fixed tube through a vent pipe. The outer surface of the sealing cavity is slidably connected to the inside of the left fixed tube.

[0009] Furthermore, the end of the sealed cavity away from the vent pipe is connected to the interior of the airbag via a connecting pipe. The airbag is annular, and the outer surface of the sliding column is inserted into the interior of the positioning groove, which is also annular.

[0010] Furthermore, a limiting groove is formed inside the limiting block, and steel balls are equidistantly installed inside the positioning block. The surface of the steel balls extends to the outside of the positioning block, and the surface of the steel balls is rolled and connected to the inner wall of the limiting groove.

[0011] Furthermore, both the positioning block and the limiting groove are parallelograms, the end face of the positioning rod is conical, and an arc-shaped silicone plate is fixedly connected to the surface of the airbag.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model, by setting a sealing component, allows two water pipes to be inserted into the left and right fixed pipes respectively. By rotating the left and right internally threaded pipes, pressure can be increased inside the airbag. Due to the strong pressure inside the sealing cavity, the surface of the airbag is sealed and adhered to the outer surface of the pipe. At the same time, when the sealing plate slides, the sliding column is driven to slide through the sealing rod. Through the connection between the positioning block and the limiting block, the positioning rod slides closer to the pipe until the end face of the positioning rod pierces the surface of the pipe. This can improve the firmness of the connection between the left internally threaded pipe or the right fixed pipe and the pipe, ensure the structural stability of the entire water supply system, and reduce problems such as leakage and water supply interruption caused by loose connection.

[0014] 2. By incorporating steel balls, this utility model reduces the friction between the positioning block and the limiting groove, extending their service life. Due to the shape of the positioning block and the limiting groove, when the positioning block slides left and right, it can drive the limiting block to slide longitudinally and stably, enhancing its practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram showing the connection between the positioning block and the limiting block in this utility model.

[0019] The attached diagram is labeled as follows: 1. Left fixed tube; 2. Left internal threaded tube; 3. Rotary ring; 4. Threaded ring; 5. Right internal threaded tube; 6. Right fixed tube; 7. Sealing assembly; 71. Sealing cavity; 72. Sealing plate; 73. Vent pipe; 74. Sealing rod; 75. Sliding column; 76. Limiting rod; 77. Positioning groove; 78. Connecting pipe; 79. Airbag; 710. Sliding rod; 711. Positioning block; 7111. Steel ball; 712. Limiting block; 7121. Limiting groove; 713. Positioning rod; 8. Sealing gasket; 9. Protrusion. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0021] Figures 1-4This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0022] Specifically, the pipeline connection device includes a left fixed pipe 1, a left internal threaded pipe 2 threaded to the outer surface of the left fixed pipe 1, a rotating ring 3 rotatably connected to the outer surface of the left fixed pipe 1, a threaded ring 4 fixedly connected to the surface of the rotating ring 3, a right fixed pipe 6 attached to the end face of the left fixed pipe 1, a right internal threaded pipe 5 threaded to the outer surface of the right fixed pipe 6, and a sealing component 7 installed inside both the left internal threaded pipe 2 and the right internal threaded pipe 5.

[0023] The sealing assembly 7 includes a sealing cavity 71 formed inside the left fixed tube 1. A sealing plate 72 is sealed inside the sealing cavity 71. A vent pipe 73, which communicates with the inside of the sealing cavity 71, is fixedly connected inside the left fixed tube 1. Sealing rods 74 are fixedly connected at equal intervals on the surface of the sealing plate 72. A sliding column 75 is fixedly connected to the end face of the sealing rod 74 away from the sealing plate 72. A limiting rod 76 is installed through the inside of the sliding column 75. A positioning groove 77 is formed on the inner wall of the left internal threaded tube 2. A connecting pipe 78, which communicates with the inside of the sealing cavity 71, is fixedly connected inside the left fixed tube 1. An airbag 79 is fixedly installed on the inner wall of the left fixed tube 1. A sliding rod 710 is fixedly connected to the surface of the sliding column 75 away from the sealing rod 74. A positioning block 711 is fixedly connected to the end face of the sliding rod 710 away from the sliding column 75. A limiting block 712 is slidably connected inside the left fixed tube 1. A positioning rod 713 is fixedly connected to the end face of the limiting block 712.

[0024] In this embodiment, by setting the sealing component 7, after the two water pipes are respectively inserted into the left fixed pipe 1 and the right fixed pipe 6, the airbag 79 can be pressurized by rotating the left internal threaded pipe 2 and the right internal threaded pipe 5. Due to the strong pressure inside the sealing cavity 71, the surface of the airbag 79 is sealed and adhered to the outer surface of the pipe. At the same time, when the sealing plate 72 slides, the sliding column 75 is driven to slide by the sealing rod 74. Through the connection between the positioning block 711 and the limiting block 712, the positioning rod 713 slides towards the pipe until the end face of the positioning rod 713 pierces the surface of the pipe. This can improve the firmness of the connection between the left internal threaded pipe 2 or the right fixed pipe 6 and the pipe, ensure the structural stability of the entire water supply system, and reduce problems such as leakage and water supply interruption caused by loose connection.

[0025] Specifically, sealing gaskets 8 are fixedly connected to the opposite surfaces of the left fixed tube 1 and the right fixed tube 6, and protrusions 9 are fixedly connected at equal intervals to the inner walls of the left fixed tube 1 and the right fixed tube 6. The inner wall of the threaded ring 4 is threadedly connected to the outer surface of the right fixed tube 6.

[0026] In this embodiment, by setting the protrusion 9, the depth of insertion of the pipe into the left fixed pipe 1 and the right fixed pipe 6 can be controlled. By setting the sealing gasket 8 at the connection between the left fixed pipe 1 and the right fixed pipe 6, the sealing performance at the connection between the left fixed pipe 1 and the right fixed pipe 6 can be enhanced.

[0027] Specifically, both the sealing plate 72 and the sealing cavity 71 are annular. The end of the sealing cavity 71 that is away from the sliding column 75 is connected to the outside of the left fixed tube 1 through the vent pipe 73. The outer surface of the sealing cavity 71 is slidably connected to the inside of the left fixed tube 1.

[0028] In this embodiment, by providing a vent pipe 73, the smooth sliding of the sealing plate 72 can be ensured.

[0029] Specifically, the end of the sealed cavity 71 away from the vent pipe 73 is connected to the inside of the airbag 79 through the connecting pipe 78. The airbag 79 is annular, and the outer surface of the sliding column 75 is inserted into the inside of the positioning groove 77, which is also annular.

[0030] In this embodiment, by setting a positioning groove 77, when the left internal threaded tube 2 is rotated, the sliding column 75 can be driven to slide through the positioning groove 77.

[0031] Specifically, a limiting groove 7121 is provided inside the limiting block 712, and steel balls 7111 are equidistantly installed inside the positioning block 711. The surface of the steel balls 7111 extends to the outside of the positioning block 711, and the surface of the steel balls 7111 is rolledly connected to the inner wall of the limiting groove 7121.

[0032] In this embodiment, by setting steel balls 7111, the friction between the positioning block 711 and the limiting groove 7121 can be reduced, thereby extending the service life of the positioning block 711 and the limiting block 712.

[0033] Specifically, the positioning block 711 and the limiting groove 7121 are both parallelograms, the end face of the positioning rod 713 is conical, and an arc-shaped silicone plate is fixedly connected to the surface of the airbag 79.

[0034] In this embodiment, due to the shape of the positioning block 711 and the limiting groove 7121, the longitudinal stability of the limiting block 712 can be improved when the positioning block 711 slides left and right.

[0035] The working principle and usage process of this utility model are as follows: During use, the two pipe sections to be connected are inserted into the left fixed pipe 1 and right fixed pipe 6 respectively, until the end face of the inserted pipe abuts against the surface of the protrusion 9. Then, by rotating the left internal threaded pipe 2 or the right internal threaded pipe 5, the sealing plate 72 is slid away from the vent pipe 73 via the positioning groove 77 and the sealing rod 74. At this time, the sealing cavity 71 is under high pressure, and the airbag 79 is also under high pressure through the connecting pipe 78. The airbag 79 then inflates and its surface seals. When the sliding column 75 slides, it is attached to the outer surface of the pipe. The sliding column 75 drives the positioning block 711 to slide through the sliding rod 710. Through the friction between the steel ball 7111 and the inner wall of the limiting groove 7121, the positioning rod 713 slides towards the pipe until the end face of the positioning rod 713 pierces the surface of the pipe. This can improve the firmness of the connection between the left internal threaded pipe 2 or the right fixed pipe 6 and the pipe. Finally, by rotating the threaded ring 4, the surfaces of the left fixed pipe 1 and the right fixed pipe 6 are sealed and attached by the sealing gasket 8. At this time, the pipe connection is completed.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A pipe connection device, comprising a left fixed pipe (1), characterized in that: The outer surface of the left fixed tube (1) is threaded with a left internal thread tube (2), the outer surface of the left fixed tube (1) is rotatably connected with a swivel ring (3), the surface of the swivel ring (3) is fixedly connected with a threaded ring (4), the end face of the left fixed tube (1) is fitted with a right fixed tube (6), the outer surface of the right fixed tube (6) is threaded with a right internal thread tube (5), and sealing components (7) are installed inside both the left internal thread tube (2) and the right internal thread tube (5). The sealing assembly (7) includes a sealing cavity (71) opened inside the left fixed tube (1). A sealing plate (72) is sealed and connected inside the sealing cavity (71). A vent pipe (73) communicating with the inside of the sealing cavity (71) is fixedly connected inside the left fixed tube (1). Sealing rods (74) are fixedly connected at equal intervals on the surface of the sealing plate (72). A sliding column (75) is fixedly connected to the end face of the sealing rod (74) away from the sealing plate (72). A limit rod (76) is installed through the sliding column (75). The inner wall of the left internal threaded tube (2) is opened. The left fixed tube (1) is provided with a positioning groove (77). A connecting tube (78) is fixedly connected to the inside of the left fixed tube (1) and communicates with the inside of the sealing cavity (71). An airbag (79) is fixedly installed on the inner wall of the left fixed tube (1). A sliding rod (710) is fixedly connected to the surface of the sliding column (75) away from the sealing rod (74). A positioning block (711) is fixedly connected to the end face of the sliding rod (710) away from the sliding column (75). A limit block (712) is slidably connected inside the left fixed tube (1). A positioning rod (713) is fixedly connected to the end face of the limit block (712).

2. The pipeline connection device according to claim 1, characterized in that: The left fixed tube (1) and the right fixed tube (6) are both fixedly connected with sealing gaskets (8), and the inner walls of the left fixed tube (1) and the right fixed tube (6) are fixedly connected with protrusions (9) at equal intervals. The inner wall of the threaded ring (4) is threadedly connected to the outer surface of the right fixed tube (6).

3. The pipeline connection device according to claim 1, characterized in that: Both the sealing plate (72) and the sealing cavity (71) are annular. The end of the sealing cavity (71) away from the sliding column (75) is connected to the outside of the left fixed tube (1) through the vent pipe (73). The outer surface of the sealing cavity (71) is slidably connected to the inside of the left fixed tube (1).

4. The pipeline connection device according to claim 1, characterized in that: The end of the sealed cavity (71) away from the vent pipe (73) is connected to the inside of the airbag (79) through the connecting pipe (78). The airbag (79) is annular. The outer surface of the sliding column (75) is inserted into the inside of the positioning groove (77). The positioning groove (77) is annular.

5. The pipeline connection device according to claim 1, characterized in that: The limiting block (712) has a limiting groove (7121) inside, and the positioning block (711) has steel balls (7111) installed equidistantly inside. The surface of the steel balls (7111) extends to the outside of the positioning block (711), and the surface of the steel balls (7111) is rolled and connected to the inner wall of the limiting groove (7121).

6. The pipeline connection device according to claim 1, characterized in that: The positioning block (711) and the limiting groove (7121) are both parallelograms, the end face of the positioning rod (713) is conical, and an arc-shaped silicone plate is fixedly connected to the surface of the airbag (79).

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