Temporary plugging head for municipal water supply pipeline

Abstract

A temporary plugging head for a municipal water supply pipeline relates to the field of municipal water supply pipelines and comprises an outer connecting plate, a plurality of fixing plates are annularly arrayed on the outer connecting plate, fastening bolts are in threaded connection with the fixing plates, a central pipe is arranged in the middle of the outer connecting plate, a plugging disc is connected to the tail end of the central pipe, and the plugging disc is in threaded connection with the fixing plates. An expansion air bag is arranged on the outer circumference of the plugging disc, the central pipe is communicated with the expansion air bag, an air pipe is arranged on the outer connecting plate, the air pipe is communicated with the central pipe, a plurality of extrusion assemblies are rotationally connected to the plugging disc, and a locking component is arranged on the central pipe. By designing the structure with the expansion air bag and the extrusion assembly, good adaptation and sealing of pipelines with different inner diameters are achieved, and the problem that a traditional plugging device has high requirement for the matching degree of the inner diameters of the pipelines is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal pipelines, in particular to a temporary plugging head for a municipal water supply pipeline. Background Art

[0002] During the maintenance of the municipal water supply system, in the face of an emergency situation where a pipeline breaks suddenly, quickly and effectively implementing sealing operations is a key measure to reduce unnecessary loss of water resources and ensure the stable operation of the water supply system.

[0003] Chinese patent CN217003647U discloses a temporary sealing device for water supply pipes used in municipal water supply construction. The device is designed to achieve instant sealing of damaged pipes through its integrated sealing ring assembly, thereby gaining valuable time for subsequent maintenance operations. The sealing ring in the device relies on its elastic deformation to fit tightly against the inner wall of the water supply pipe. However, this design places extremely high demands on the matching degree of the inner diameter of the pipe. The sealing ring must be fully adapted to the inner diameter of the water supply pipe to achieve a good sealing effect. If the size deviates slightly, the sealing ring may not be able to fully fill the gap between the pipe and the device, thereby affecting the sealing effect. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a temporary plugging head for a municipal water supply pipeline.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A temporary plugging head for a municipal water supply pipe is installed in the municipal water supply pipe, comprising an external connecting plate, a plurality of fixed plates arranged in a circular array on the external connecting plate, fastening bolts being threadedly connected to the fixed plates, a central tube being provided in the middle of the external connecting plate, a sealing disc being connected to the end of the central tube, an expansion airbag being provided on the outer circumference of the sealing disc, the central tube being connected to the expansion airbag, an air pipe being provided on the external connecting plate, the air pipe being connected to the central tube, a plurality of extrusion components being rotatably connected to the sealing disc, and a locking member being provided on the central tube.

[0007] Furthermore, the locking member can drive the extrusion assembly to lean against the inner wall of the municipal water supply pipe.

[0008] Furthermore, the extrusion assembly includes a hinge seat, an extrusion plate is rotatably connected to the hinge seat, and a rubber anti-slip pad is provided on the extrusion plate.

[0009] Furthermore, the extrusion assembly includes an articulated seat, a connecting rod is rotatably connected to the articulated seat, an extrusion plate is rotatably connected to the connecting rod, and a rubber anti-slip pad is provided on the extrusion plate.

[0010] Furthermore, the locking member includes a sleeve, which can slide along the central tube and be locked and fixed by the first knob and the second knob. A fixing seat is provided on the sleeve, and a linkage rod is rotatably connected to the fixing seat. The end of the linkage rod is rotatably connected to the extrusion plate.

[0011] Furthermore, an external thread is provided on the outer wall of the central tube, and the first knob and the second knob are threadedly connected to the outer wall of the central tube.

[0012] Furthermore, the first knob and the second knob are respectively located on two sides of the sleeve.

[0013] Furthermore, a fixed shaft is provided on the fixed seat, and a linkage rod is rotatably connected to the fixed shaft.

[0014] Furthermore, the sleeve slides along the central tube, so that the linkage rod drives the extrusion plate to rotate around the hinge seat, and the rubber anti-slip pad rests on the inner wall of the municipal water supply pipe and undergoes elastic deformation.

[0015] Compared with existing technologies, the present invention offers the following advantages: By designing a structure with an inflatable bladder and a squeeze assembly, it achieves excellent adaptability and sealing for pipes of varying inner diameters, effectively resolving the high pipe diameter matching requirements of conventional plugging devices. Driven by a locking member, the squeeze assembly tightly adheres to the pipe's inner wall, enhancing friction between the entire device and the pipe, effectively preventing the potential risk of slippage between the inflatable bladder and the pipe's inner wall under high water pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the first embodiment;

[0017] Figure 2 is a schematic structural diagram of the second embodiment;

[0018] Among them: 1 outer connecting plate, 11 fixed plate, 12 fastening bolts, 2 center tube, 3 expansion airbag, 4 extrusion assembly, 41 linkage rod, 42 extrusion plate, 43 rubber anti-slip pad, 44 hinged seat, 45 connecting rod, 5 locking member, 51 sleeve, 52 first knob, 53 second knob, 54 fixed seat, 55 fixed shaft, 6 air pipe, 100 municipal water supply pipeline. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The present invention is further described in conjunction with the drawings and embodiments:

[0020] First embodiment

[0021] like Figure 1 As shown, a temporary plugging head for a municipal water supply pipe is installed in a municipal water supply pipe 100 and includes an outer connecting plate 1, the surface of which is treated with anti-corrosion to enhance durability. The outer connecting plate is provided with a plurality of fixed plates 11 in a circular array, and the fixed plates are threaded with fastening bolts 12. A central tube 2 is provided in the middle of the outer connecting plate, and a plugging disc is connected to the end of the central tube. An expansion airbag 3 is provided on the outer circumference of the plugging disc. The airbag is made of wear-resistant and high-pressure resistant rubber to ensure that it can fit tightly against the inner wall of the pipe after inflation. The central tube is connected to the expansion airbag, and an air pipe 6 is provided on the outer connecting plate. The inner diameter of the air pipe is 8 mm. The air pipe is connected to the central tube. Several extrusion components 4 are rotatably connected to the plugging disc, and a locking member 5 is provided on the central tube.

[0022] A control valve may be installed in the trachea, and the trachea is connected to an air pump to inflate the expansion airbag.

[0023] Furthermore, the locking member can drive the extrusion assembly to lean against the inner wall of the municipal water supply pipe.

[0024] In at least one embodiment, the extrusion assembly includes an articulated seat 44, to which an extrusion plate 42 is rotatably connected, and on which a rubber anti-skid pad 43 is provided. The rubber anti-skid pad is made of highly elastic and high-friction nitrile rubber to ensure good anti-skid performance even in wet environments.

[0025] In at least one embodiment, the locking member includes a sleeve 51 made of a high-strength aluminum alloy with an anodized surface for enhanced wear resistance. The sleeve can slide along the center tube and is locked and secured by a first knob 52 and a second knob 53. The sleeve is provided with a fixing seat 54, to which a linkage rod 41 is rotatably connected. The end of the linkage rod is rotatably connected to the extrusion plate. The knob is made of high-strength brass with anti-slip grooves on the surface for easy manual operation. The linkage rod is made of alloy steel and has been heat-treated to enhance its strength and toughness.

[0026] The solution is refined, and an external thread is provided on the outer wall of the central tube, and the first knob and the second knob are threadedly connected to the outer wall of the central tube.

[0027] The solution is refined, and the first knob and the second knob are respectively located on both sides of the sleeve.

[0028] Furthermore, a fixed shaft 55 is provided on the fixed seat, and a linkage rod is rotatably connected to the fixed shaft.

[0029] The solution is refined. The sleeve slides along the central tube so that the linkage rod drives the extrusion plate to rotate around the hinge seat, and the rubber anti-slip pad rests on the inner wall of the municipal water supply pipe and undergoes elastic deformation.

[0030] Working method, ensure that all components are intact, especially the inflation bag, air tube, fastening bolts, extrusion assembly and locking member. Completely assemble the plug head, ensure that the air tube is connected to the center tube and the control valve is installed in the air tube. Prepare the air pump and ensure that the air tube is properly connected to the air pump.

[0031] Secure the plugging head to the desired location in the municipal water supply pipe using the fixing plate and fastening bolts on the external connecting plate. Ensure that the plugging disc and expansion bag can be smoothly placed in the pipe and that the expansion bag is in a deflated state when not inflated.

[0032] Connect the air pump and air pipe, open the control valve, and start inflating the expansion bag. As the expansion bag gradually expands, it will fit tightly against the inner wall of the municipal water supply pipe, achieving a preliminary blockage.

[0033] Adjust the sleeve's position on the central pipe based on the pipe's inner diameter and sealing requirements, and secure it to the central pipe using the first and second knobs. The sleeve's sliding movement drives the linkage, which in turn rotates the extrusion plate around its hinged base. The rubber anti-slip pad on the extrusion plate rests against the inner wall of the municipal water pipe and elastically deforms, further enhancing its anti-slip properties.

[0034] Check that the plugging head is securely fastened to the pipe and that the inflatable bladder and extrusion assembly are tightly fitted to the pipe's inner wall. If necessary, adjust the plugging head's position and sealing effectiveness by adjusting the fastening bolts or re-inflating the bladder. During use, regularly check the plugging head to ensure that all components are intact and functioning properly. After use, deflate and remove the plugging head, storing it securely for future use.

[0035] Second embodiment

[0036] The difference from the first embodiment is that the extrusion assembly is different.

[0037] The extrusion assembly includes an articulated seat 44 , a connecting rod 45 is rotatably connected to the articulated seat, an extrusion plate 42 is rotatably connected to the connecting rod, and a rubber anti-slip pad 43 is provided on the extrusion plate.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A temporary plug for a municipal water supply pipe, installed in a municipal water supply pipe, characterized in that: It includes an outer connecting plate, on which a plurality of fixed plates are arranged in a circular array, and the fixed plates are threadedly connected with fastening bolts, a central tube is provided in the middle of the outer connecting plate, and a sealing disc is connected to the end of the central tube, and an expansion airbag is provided on the outer circumference of the sealing disc, and the central tube is connected to the expansion airbag, an air pipe is provided on the outer connecting plate, and the air pipe is connected to the central tube, and a plurality of extrusion components are rotatably connected to the sealing disc, and a locking member is provided on the central tube.

2. The temporary plugging head for municipal water supply pipe according to claim 1, characterized in that: The locking member can drive the extrusion assembly against the inner wall of the municipal water supply pipe.

3. The temporary plugging head for municipal water supply pipe according to claim 1, characterized in that: The extrusion assembly includes a hinge seat, an extrusion plate is rotatably connected to the hinge seat, and a rubber anti-slip pad is provided on the extrusion plate.

4. The temporary plugging head for municipal water supply pipe according to claim 1, characterized in that: The extrusion assembly includes an articulated seat, a connecting rod is rotatably connected to the articulated seat, an extrusion plate is rotatably connected to the connecting rod, and a rubber anti-slip pad is provided on the extrusion plate.

5. The temporary plugging head for municipal water supply pipe according to claim 3 or 4, characterized in that: The locking member includes a sleeve, which can slide along the central tube and be locked and fixed by a first knob and a second knob. A fixing seat is provided on the sleeve, and a linkage rod is rotatably connected to the fixing seat. The end of the linkage rod is rotatably connected to the extrusion plate.

6. The temporary plugging head for municipal water supply pipe according to claim 5, characterized in that: An external thread is provided on the outer wall of the central tube, and the first knob and the second knob are threadedly connected to the outer wall of the central tube.

7. The temporary plug for municipal water supply pipe according to claim 6, characterized in that: The first knob and the second knob are respectively located on two sides of the sleeve.

8. The temporary plug for municipal water supply pipe according to claim 5, characterized in that: A fixed shaft is provided on the fixed seat, and a linkage rod is rotatably connected to the fixed shaft.

9. The temporary plug for municipal water supply pipe according to claim 7, characterized in that: The sleeve slides along the central pipe so that the linkage rod drives the extrusion plate to rotate around the hinge seat, and the rubber anti-slip pad rests on the inner wall of the municipal water supply pipe and undergoes elastic deformation.

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