Temporary plug for municipal water supply pipe

Abstract

The utility model discloses a kind of municipal water supply pipeline temporary plugging head, including support frame, the outer wall of support frame is sleeved with first plugging structure, the inner wall of support frame is equipped with second plugging structure, the inner wall of second plugging structure is equipped with cleaning structure, the stability of plugging component whole is guaranteed by support frame, by the setting of first plugging structure and second plugging structure, main sealing plus auxiliary compensation double-layer structure is used, main sealing is inflatable high elasticity EPDM rubber, after inflation, first contact pipe wall and preliminary seal, the position of auxiliary compensation and main sealing connection is polyurethane memory material, located in the rear of main sealing ring, after main sealing ring setting is completed, water supply pipeline is completely plugged by subsequent locking, solve the problem of pipeline adaptability, while auxiliary compensation, i.

Description

Technical Field

[0001] This utility model relates to the field of municipal water supply pipeline technology, specifically to a temporary sealing head for municipal water supply pipelines. Background Technology

[0002] Temporary plugs for municipal water supply pipelines are key devices used to temporarily block water flow and maintain pressure within the pipeline during pipeline repair, renovation, and inspection. Their core function is to achieve rapid installation, reliable sealing, and convenient removal without damaging the pipeline structure, ensuring that the surrounding environment (such as roads and buildings) is not affected by water accumulation during construction, while also avoiding water waste. Existing mechanically installed plugs with cover plates are time-consuming and labor-intensive to install, and have a limited range of applications. Utility Model Content

[0003] The purpose of this utility model is to provide a temporary sealing head for municipal water supply pipelines to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a temporary sealing head for municipal water supply pipelines, including a support frame, a first sealing structure sleeved on the outer wall of the support frame, a second sealing structure assembled on the inner wall of the support frame, and a cleaning structure throughly assembled on the inner wall of the second sealing structure.

[0005] Preferably, the first sealing structure includes a sealing airbag and four valve bodies. The sealing airbag is fixedly assembled to the outer wall of the support frame, and the inner side wall of the sealing airbag is connected to the four valve bodies, with each valve body penetrating one side wall of the support frame.

[0006] Preferably, the second sealing structure includes four supports, with each pair of supports forming a group and symmetrically fixed to one side wall of the support frame. The upper and lower groups of supports are symmetrically arranged. A sliding rod is inserted into the inner wall of each support. A threaded section is machined in the middle of the outer wall of the sliding rod, and the threaded section is screwed to the support. A blocking plate is rotatably mounted on the end of each of the four sliding rods. A sealing frame is fixedly mounted on the end of the blocking plate near the sliding rod. The sealing frame is inserted into the support frame, and the outer wall of the sealing frame is tightly fitted to the inner wall of the support frame.

[0007] Preferably, the cleaning structure includes a motor, which is fixedly mounted on the inner wall of the second sealing structure, and the outer wall of the motor is connected to the second sealing structure through a sealing ring. A motor base is fixedly mounted on the outer wall of the motor, and the motor base is fixedly connected to the side wall of the second sealing structure. The motor base covers the outer wall of the inner opening through which the motor passes through the second sealing structure, thus also serving a sealing function. A steel brush is fixedly mounted on the outer wall of the motor shaft of the motor.

[0008] Preferably, a rubber ring is fixedly fitted to the outer surface of the sealing airbag.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the support frame ensures the overall stability of the sealing component; the first sealing structure and the second sealing structure are set up, and a double-layer structure of main seal plus auxiliary compensation is adopted. The main seal is made of inflatable high-elasticity EPDM rubber, which contacts the pipe wall and initially seals after inflation. The auxiliary compensation is connected to the main seal with polyurethane memory material, located behind the main sealing ring. After the main sealing ring is set, the water supply pipe is completely sealed by subsequent locking, which solves the problem of pipe compatibility. At the same time, the auxiliary compensation, i.e., the second sealing structure, can drive the cleaning structure to clean and remove impurities from the inner wall of the pipe in advance, ensuring the sealing effect during sealing, while avoiding scratching the first sealing structure and playing a role in protecting the first sealing structure. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0011] Figure 2 This is a front view of the present invention;

[0012] Figure 3 This is a three-dimensional schematic diagram of part of the structure of this utility model.

[0013] In the diagram: 1-support frame, 2-first sealing structure, 21-sealing airbag, 22-valve body, 3-second sealing structure, 31-support, 32-slide rod, 33-threaded section, 34-sealing frame, 35-blocking plate, 4-cleaning structure, 41-motor, 42-motor base, 43-steel brush, 5-rubber ring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model provides a temporary sealing head for municipal water supply pipelines, including a support frame 1, a first sealing structure 2 sleeved on the outer wall of the support frame 1, a second sealing structure 3 assembled on the inner wall of the support frame 1, and a cleaning structure 4 through the inner wall of the second sealing structure 3.

[0016] The support frame 1 ensures the overall stability of the sealing components. The first sealing structure 2 and the second sealing structure 3 are set up, and a double-layer structure of main seal plus auxiliary compensation is adopted. The main seal is an inflatable high-elasticity EPDM rubber. After inflation, it first contacts the pipe wall and initially seals. The auxiliary compensation is connected to the main seal with polyurethane memory material and is located behind the main sealing ring. After the main sealing ring is set, the water supply pipe is completely sealed by subsequent locking, which solves the pipe compatibility problem. At the same time, the auxiliary compensation, i.e. the second sealing structure 3, can drive the cleaning structure 4 to clean and remove impurities from the inner wall of the pipe in advance, ensuring the sealing effect during sealing, and avoiding scratching the first sealing structure 2, thus protecting the first sealing structure 2.

[0017] The first sealing structure 2 includes a sealing airbag 21 and four valve bodies 22. The sealing airbag 21 is fixedly assembled to the outer wall of the support frame 1. The inner side wall of the sealing airbag 21 is connected to the four valve bodies 22, and each valve body 22 penetrates one side wall of the support frame 1.

[0018] The sealing airbag 21 is made of highly elastic EPDM rubber, with a large deformation range and good sealing effect. Different valve bodies 22 are selected for inflation and deflation according to the sealing situation at different locations, ensuring a wide range of applications and good sealing performance. At the same time, the support frame 1 ensures stability while reducing the volume of traditional sealing airbags, which can reduce the deformation range and make them less prone to damage.

[0019] The second sealing structure 3 includes four supports 31, with each pair of supports 31 forming a group and symmetrically fixed to one side wall of the support frame 1. The upper and lower groups of supports 31 are symmetrically arranged. Each support 31 has a sliding rod 32 inserted into its inner wall. The outer wall of the sliding rod 32 has a threaded section 33 machined in the middle. The threaded section 33 is screwed to the support 31. The ends of the four sliding rods 32 are rotatably fitted with blocking plates 35. A sealing frame 34 is fixedly fitted at one end of the blocking plate 35 near the sliding rod 32. The sealing frame 34 is inserted into the support frame 1, and the outer wall of the sealing frame 34 is tightly fitted to the inner wall of the support frame 1.

[0020] After the first sealing structure 2 is set, pull the four sliding rods 32 until the threaded section 33 contacts the support 31. At this time, rotate the four sliding rods 32 to drive the threaded section 33 to be screwed into the support 31 and complete the fixation. At the same time, the sealing frame 34 is tightly inserted into the support frame 1. The sealing frame 34 is made of polyurethane memory material and has a good sealing effect. As the threaded rod 32 continues to penetrate into the support 31, the outer sealing plate 35 seals and covers the periphery of the support frame 1.

[0021] The cleaning structure 4 includes a motor 41, which is fixedly mounted on the inner wall of the second sealing structure 3. The outer wall of the motor 41 is connected to the second sealing structure 3 through a sealing ring. A motor base 42 is fixedly mounted on the outer wall of the motor 41. The motor base 42 is fixedly connected to the side wall of the second sealing structure 3 and covers the outer wall of the inner opening of the motor 41 that penetrates the second sealing structure 3, thus also serving a sealing function. A steel brush 43 is fixedly mounted on the outer wall of the motor shaft of the motor 41.

[0022] Before using the sealing device, turn on the motor 41 to drive the steel brush 43 to clean the inner wall of the pipe, so as to avoid burrs and impurities from piercing and damaging the first sealing structure. The motor base 42 can ensure the airtightness of the motor 41 installation and at the same time ensure the stability of the motor 41.

[0023] The outer surface of the occlusion airbag 21 is fixedly fitted with a rubber ring 5.

[0024] The rubber ring 5 ensures a better sealing effect while protecting the sealing airbag 21.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temporary sealing plug for municipal water supply pipelines, characterized in that: It includes a support frame (1), the outer wall of which is fitted with a first sealing structure (2), the inner wall of which is fitted with a second sealing structure (3), and the inner wall of the second sealing structure (3) is fitted with a cleaning structure (4).

2. A temporary sealing plug for municipal water supply pipelines according to claim 1, characterized in that: The first sealing structure (2) includes a sealing airbag (21) and four valve bodies (22). The sealing airbag (21) is fixedly assembled on the outer wall of the support frame (1). The inner side wall of the sealing airbag (21) is connected to the four valve bodies (22), and each valve body (22) penetrates one side wall of the support frame (1).

3. A temporary sealing plug for a municipal water supply pipeline according to claim 1, characterized in that: The second sealing structure (3) includes four supports (31), each pair of supports (31) forming a group and symmetrically fixed to one side wall of the support frame (1), and the upper and lower groups of supports (31) are symmetrically arranged. Each support (31) has a sliding rod (32) inserted into its inner wall. The outer wall of the sliding rod (32) has a threaded section (33) machined in the middle. The threaded section (33) is screwed to the support (31). The ends of the four sliding rods (32) are rotatably fitted with a blocking plate (35). The end of the blocking plate (35) near the sliding rod (32) is fixedly fitted with a sealing frame (34). The sealing frame (34) is inserted into the support frame (1), and the outer wall of the sealing frame (34) is tightly fitted to the inner wall of the support frame (1).

4. A temporary sealing plug for a municipal water supply pipeline according to claim 1, characterized in that: The cleaning structure (4) includes a motor (41), which is fixedly mounted on the inner wall of the second sealing structure (3). The outer wall of the motor (41) is connected to the second sealing structure (3) through a sealing ring. A motor seat (42) is fixedly mounted on the outer wall of the motor (41). The motor seat (42) is fixedly connected to the side wall of the second sealing structure (3). The motor seat (42) covers the outer wall of the inner opening of the motor (41) through the second sealing structure (3), which also serves as a seal. A steel brush (43) is fixedly mounted on the outer wall of the motor shaft of the motor (41).

5. A temporary sealing plug for a municipal water supply pipeline according to claim 2, characterized in that: The sealing airbag (21) is fixedly fitted with a rubber ring (5).

Images