Temporary plugging equipment for pipeline

Abstract

The utility model relates to the technical field of pipeline plugging, and discloses temporary plugging equipment for a pipeline. The temporary pipeline plugging equipment comprises a rubber air bag, a connecting pipe is installed at the front end of the rubber air bag in a penetrating mode, a one-way valve is fixedly installed in the connecting pipe, a limiting plate is fixedly installed at the top end of the connecting pipe, an exhaust hole is formed in the outer side of the limiting plate, and a telescopic rod is fixedly installed below the limiting plate. A spring is installed on the outer side of the telescopic rod in a penetrating mode, a connecting plate is fixedly installed at the lower end of the telescopic rod, the connecting pipe is of a three-way structure, a flange structure is arranged at the front end of the connecting pipe, the one-way valve is fixedly installed on the front side of the connecting pipe and located on the front side of a vertical branch of the connecting pipe, and the one-way valve is communicated from front to back. The rear end of the connecting pipe is connected with the rubber air bag, the connecting pipe and the air pump are directly disconnected after inflation is completed, operation after inflation is completed is reduced, and use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline plugging, in particular to a pipeline temporary plugging device. Background Technique

[0002] The main function of the pipeline temporary plugging device is to quickly block the water flow for pipeline maintenance, inspection or other related operations. These devices are usually made of reinforced natural rubber and can quickly block the water flow at different pipe diameters, different planes and different positions. Their designs consider various specifications and shapes to adapt to different pipelines and maintenance needs.

[0003] The existing Chinese utility model patent with the reference publication number: CN218409025U discloses a new type of pipeline construction temporary plugging device, including a limiting frame and a bidirectional lead screw connected through a grooved bearing. It also includes: a plugging box with an open left side, and the right end of the plugging box is connected to the bidirectional lead screw through a grooved bearing, and the left end of the bidirectional lead screw extends through to the inside of the plugging box. An installation plate is provided at the left end of the bidirectional lead screw, and the diameter of the installation plate is larger than that of the bidirectional lead screw. This new type of pipeline construction temporary plugging device is equipped with an installation plate, an electric telescopic rod and a scraper. By installing an installation plate at the left end of the bidirectional lead screw, and then arranging two electric telescopic rods of the same size at the upper and lower ends on the left side of the installation plate, and then connecting scrapers to the outer sides of the two electric telescopic rods, it can well drive the two electric telescopic rods through the two scrapers to clean and scrape the inner wall of the pipeline by rotating the bidirectional lead screw, avoiding the adhesion of external rainwater and silt to the inner wall of the pipeline.

[0004] The existing plugging devices are generally rubber air bags. When installing, it is necessary to close the valve of the air bag after inflation to limit the air pressure inside the air bag, and the operation is very inconvenient. At the same time, because the existing plugging devices have no pressure relief structure, the air bag may be damaged and burst due to the internal air pressure exceeding the bearing limit of the air bag during use. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a pipeline temporary plugging device, which has the advantages of convenient operation and can avoid the air bag bursting due to excessive air pressure, and solves the above technical problems.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solutions: A temporary pipeline plugging device, comprising: a rubber airbag, a connecting pipe is inserted and installed at the front end of the rubber airbag, a one-way valve is fixedly installed inside the connecting pipe, a limiting plate is fixedly installed at the top end of the connecting pipe, exhaust holes are arranged on the outer side of the limiting plate, a telescopic rod is fixedly installed below the limiting plate, a spring is inserted and installed on the outer side of the telescopic rod, a connecting plate is fixedly installed at the lower end of the telescopic rod, a rubber column is fixedly installed at the center of the connecting plate, a movable gear disc is fixedly installed below the connecting plate, a limiting ring is fixedly installed inside the connecting pipe, a sealing ring is fixedly installed above the limiting ring, and a fixed gear disc is fixedly installed above the sealing ring; The rubber airbag can plug the pipeline.

[0009] As a preferred technical solution of the present utility model, the connecting pipe is of a tee structure, a flange structure is provided at the front end of the connecting pipe, and the one-way valve is fixedly installed on the front side of the connecting pipe, located on the front side of the vertical branch of the connecting pipe; The connecting pipe can facilitate the inflation of the rubber airbag.

[0010] As a preferred technical solution of the present utility model, the conducting direction of the one-way valve is from front to back, the limiting plate is connected to the connecting pipe through a threaded structure, and the exhaust holes are annularly distributed with the center of the limiting plate as the reference on the outer edge of the limiting plate; The one-way valve can limit the gas flow direction.

[0011] As a preferred technical solution of the present utility model, annular protrusions are provided at the upper and lower ends of the telescopic rod, and the upper and lower ends of the spring are respectively fixedly connected to the annular protrusion structures at the upper and lower ends of the telescopic rod; The telescopic rod can limit the deformation of the spring.

[0012] As a preferred technical solution of the present utility model, the rubber column is located at the center of the bottom surface of the connecting plate, and an opening structure for fitting with the rubber column is provided at the centers of the movable gear disc and the fixed gear disc, and a sliding connection is formed between the fixed gear disc and the rubber column; The rubber column can play a sealing role.

[0013] As a preferred technical solution of the present utility model, tooth-shaped structures that fit with each other are provided on the bottom surface of the movable gear disc and the top surface of the fixed gear disc, and the movable gear disc is movably connected to the connecting pipe through the telescopic rod; The fixed gear disc and the movable gear disc can play a sealing role when they are fitted.

[0014] As a preferred technical solution of the present utility model, the outer side surface of the limiting ring is fixedly connected to the inner wall of the connecting pipe, the limiting ring is symmetrically installed above and below the fixed gear disc with the center of the fixed gear disc as the reference, and the sealing ring is located between the fixed gear disc and the limiting ring; The limiting ring can limit the position of the fixed gear disc.

[0015] Compared with the prior art, the utility model provides a temporary pipeline plugging device, which has the following

[0016] Advantages:

[0017] 1. Through the setting of the one-way valve, the connecting pipe is of a tee structure, a flange structure is arranged at the front end of the connecting pipe, the one-way valve is fixedly installed on the front side of the connecting pipe, on the front side of the vertical branch of the connecting pipe, the conduction direction of the one-way valve is from front to back, the rear end of the connecting pipe is connected with the rubber airbag, and after inflation is completed, the connection between the connecting pipe and the air pump can be directly disconnected, reducing the operations after inflation is completed, so as to be convenient for use.

[0018] 2. Through the setting of the spring, annular protrusions are arranged at the upper and lower ends of the telescopic rod, the upper and lower ends of the spring are respectively fixedly connected with the annular protrusion structures at the upper and lower ends of the telescopic rod, the telescopic rod can limit the deformation of the spring, the spring always remains in a contracted state, the spring can apply a downward force to the connecting plate when contracting, so that the fixed tooth disc and the movable tooth disc are kept in an engaged state, and the fixed tooth disc and the movable tooth disc can play a sealing role when engaged. The limiting plate is connected with the connecting pipe through a threaded structure. When inflating, the gas inside the rubber airbag will apply an upward force to the connecting plate through the rubber column. After the internal air pressure is greater than the elastic force generated when the spring contracts, the internal air pressure will squeeze the spring upward, causing the spring to contract. At this time, the movable tooth disc will not be able to engage with the fixed tooth disc, so as to achieve the effect of automatic pressure relief, so as to avoid damage and explosion of the rubber airbag due to the internal air pressure exceeding the bearing limit of the rubber airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the installation structure of the connecting pipe of the utility model;

[0021] Figure 3 It is a schematic sectional view of the connecting pipe of the utility model;

[0022] Figure 4 It is a schematic diagram of the installation structure of the movable tooth disc of the utility model;

[0023] Wherein: 1. Rubber airbag; 11. Connecting pipe; 12. One-way valve; 13. Limiting plate; 14. Exhaust hole; 15. Telescopic rod; 16. Spring; 17. Connecting plate; 18. Rubber column; 19. Movable tooth disc; 110. Limiting ring; 111. Sealing ring; 112. Fixed tooth disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Please refer to Figure 1 - Figure 4 , in this embodiment, a temporary pipeline plugging device includes: a rubber airbag 1. A connecting pipe 11 is inserted and installed at the front end of the rubber airbag 1. A one-way valve 12 is fixedly installed inside the connecting pipe 11. A limiting plate 13 is fixedly installed at the top of the connecting pipe 11. An exhaust hole 14 is arranged outside the limiting plate 13. A telescopic rod 15 is fixedly installed below the limiting plate 13. A spring 16 is inserted and installed outside the telescopic rod 15. The lower end of the telescopic rod 15 is fixedly installed with a connecting plate 17. A rubber column 18 is fixedly installed at the center of the connecting plate 17. A movable gear disc 19 is fixedly installed below the connecting plate 17. A limiting ring 110 is fixedly installed inside the connecting pipe 11. A sealing ring 111 is fixedly installed above the limiting ring 110. A fixed gear disc 112 is fixedly installed above the sealing ring 111.

[0028] The connecting pipe 11 is of a tee structure. A flange structure is provided at the front end of the connecting pipe 11. The one-way valve 12 is fixedly installed on the front side of the connecting pipe 11, located on the front side of the vertical branch of the connecting pipe 11. The conduction direction of the one-way valve 12 is from front to back. The limiting plate 13 is connected to the connecting pipe 11 through a threaded structure. The exhaust holes 14 are annularly distributed on the outer edge of the limiting plate 13 with the center of the limiting plate 13 as the reference. Annular protrusions are provided at the upper and lower ends of the telescopic rod 15. The upper and lower ends of the spring 16 are respectively fixedly connected to the annular protrusion structures at the upper and lower ends of the telescopic rod 15. The rubber column 18 is located at the center of the bottom surface of the connecting plate 17. An opening structure for fitting with the rubber column 18 is provided at the centers of the movable sprocket 19 and the fixed sprocket 112. A sliding connection is formed between the fixed sprocket 112 and the rubber column 18. Tooth-shaped structures that fit with each other are provided on the bottom surface of the movable sprocket 19 and the top surface of the fixed sprocket 112. The movable sprocket 19 is movably connected to the connecting pipe 11 through the telescopic rod 15. The outer side surface of the limiting ring 110 is fixedly connected to the inner wall of the connecting pipe 11. The limiting ring 110 is symmetrically installed on the upper and lower sides of the fixed sprocket 112 with the center of the fixed sprocket 112 as the reference. The sealing ring 111 is located between the fixed sprocket 112 and the limiting ring 110.

[0029] Specifically, the rubber airbag 1 can block the pipeline. The connecting pipe 11 can facilitate the inflation of the rubber airbag 1. The one-way valve 12 can limit the gas flow direction. The limiting plate 13 can limit the position of the upper end of the telescopic rod 15. The telescopic rod 15 can limit the deformation of the spring 16. The spring 16 can apply a downward force to the connecting plate 17 when contracting. The spring 16 always remains in a contracted state. The connecting plate 17 can drive the movable sprocket 19 to move. The rubber column 18 can play a sealing role. The limiting ring 110 can limit the position of the fixed sprocket 112. The sealing ring 111 can achieve a sealing effect. The fixed sprocket 112 and the movable sprocket 19 can play a sealing role when they are engaged.

[0030] In use, the connecting pipe 11 has a tee structure, and a flange structure is provided at the front end of the connecting pipe 11. The one-way valve 12 is fixedly installed on the front side of the connecting pipe 11, located on the front side of the vertical branch of the connecting pipe 11. The flow direction of the one-way valve 12 is from front to back. The rear end of the connecting pipe 11 is connected to the rubber airbag 1. After inflation is completed, the connection between the connecting pipe 1 and the air pump can be directly disconnected, reducing the operations after inflation to facilitate use. Annular protrusions are provided at the upper and lower ends of the telescopic rod 15. The upper and lower ends of the spring 16 are respectively fixedly connected to the annular protrusion structures at the upper and lower ends of the telescopic rod 15. The telescopic rod 15 can limit the deformation of the spring 16, and the spring 16 always remains in a contracted state. The spring 16 can apply a downward force to the connecting plate 17 when contracting, so that the fixed sprocket 112 and the movable sprocket 19 remain in an engaged state. The fixed sprocket 112 and the movable sprocket 19 can play a sealing role when engaged. The limiting plate 13 is connected to the connecting pipe 11 through a threaded structure. During inflation, the gas inside the rubber airbag 11 will apply an upward force to the connecting plate 17 through the rubber column 18. When the internal air pressure is greater than the elastic force generated by the contraction of the spring 16, the internal air pressure will squeeze the spring 16 upward, causing the spring 16 to contract. At this time, the movable sprocket 19 will not be able to engage with the fixed sprocket 112, thus achieving the effect of automatic pressure relief to prevent the rubber airbag 1 from being damaged and exploded due to the internal air pressure exceeding the bearing limit of the rubber airbag 1.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temporary pipeline plugging device, characterized in that, Including: A rubber airbag (1), a connecting pipe (11) is inserted and installed at the front end of the rubber airbag (1), a one-way valve (12) is fixedly installed inside the connecting pipe (11), a limiting plate (13) is fixedly installed at the top end of the connecting pipe (11), exhaust holes (14) are arranged on the outer side of the limiting plate (13), a telescopic rod (15) is fixedly installed below the limiting plate (13), a spring (16) is inserted and installed on the outer side of the telescopic rod (15), a connecting plate (17) is fixedly installed at the lower end of the telescopic rod (15), a rubber column (18) is fixedly installed at the center of the connecting plate (17), a movable sprocket (19) is fixedly installed below the connecting plate (17), a limiting ring (110) is fixedly installed inside the connecting pipe (11), a sealing ring (111) is fixedly installed above the limiting ring (110), and a fixed sprocket (112) is fixedly installed above the sealing ring (111).

2. A temporary pipeline plugging device according to claim 1, wherein: The connecting pipe (11) is of a tee structure, a flange structure is arranged at the front end of the connecting pipe (11), and the one-way valve (12) is fixedly installed on the front side of the connecting pipe (11), on the front side of the vertical branch of the connecting pipe (11).

3. A temporary pipeline plugging device according to claim 1, wherein: The flow direction of the one-way valve (12) is from front to back, the limiting plate (13) is connected to the connecting pipe (11) through a threaded structure, and the exhaust holes (14) are annularly distributed on the outer edge of the limiting plate (13) with the center of the limiting plate (13) as the reference.

4. A temporary pipeline plugging device according to claim 1, wherein: Annular protrusions are arranged at the upper and lower ends of the telescopic rod (15), and the upper and lower ends of the spring (16) are respectively fixedly connected to the annular protrusion structures at the upper and lower ends of the telescopic rod (15).

5. A temporary pipeline plugging device according to claim 1, wherein: The rubber column (18) is located at the center of the bottom surface of the connecting plate (17), an opening structure for fitting with the rubber column (18) is arranged at the centers of the movable sprocket (19) and the fixed sprocket (112), and a sliding connection is formed between the fixed sprocket (112) and the rubber column (18).

6. A temporary pipeline plugging device according to claim 1, wherein: Toothed structures that fit with each other are arranged on the bottom surface of the movable sprocket (19) and the top surface of the fixed sprocket (112), and the movable sprocket (19) is movably connected to the connecting pipe (11) through the telescopic rod (15).

7. A temporary pipeline plugging device according to claim 1, wherein: The outer side surface of the limiting ring (110) is fixedly connected to the inner wall of the connecting pipe (11), the limiting ring (110) is symmetrically installed above and below the fixed sprocket (112) with the center of the fixed sprocket (112) as the reference, and the sealing ring (111) is located between the fixed sprocket (112) and the limiting ring (110).

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