Plugging device for irrigation test

Abstract

The plugging device comprises a hollow threaded rod, a rubber barrel, a metal pressing plate and a rotating hand wheel, the hollow threaded rod comprises a threaded rod body and an annular wing plate connected with the upper end of the threaded rod body, the rubber barrel is of a hollow barrel-shaped structure, and limiting grooves are formed in the upper end face and the lower end face of the rubber barrel. An annular wing plate of the hollow threaded rod is arranged in a limiting groove in the upper end face of the rubber cylinder, a metal pressing plate is arranged outside a threaded rod body in a sleeving mode and limited in a limiting groove in the lower end face of the rubber cylinder, and a rotating hand wheel is arranged on the portion, below the metal pressing plate, of the threaded rod body and used for providing extrusion force for the rubber cylinder through manual rotation. A ball valve is arranged at the lower end of the threaded rod body and used for draining water. The device has the following advantages that the device can quickly block the section of the pipeline, bear certain water pressure and discharge test water in a managed manner after the test is finished, and meanwhile, additional auxiliary equipment is not adopted, and the device is small and exquisite and simple to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of building drainage pipeline inspection, and in particular relates to a plugging device for water filling test. Background Art

[0002] In water supply and drainage projects, pressure test and water filling test of water supply and drainage projects are increasingly valued as key links in project quality acceptance. Article 5.2.1 of "Construction Quality Acceptance Code for Water Supply, Drainage and Heating Projects" gb50242-2002 stipulates: Concealed or buried drainage pipes must be tested with water before concealment, and the water filling height should not be lower than the upper edge of the bottom sanitary ware or the ground height of the bottom. Inspection method: After the water level drops after 15 minutes of full water, fill it up again and observe for 5 minutes. If the liquid level does not drop and there is no leakage in the pipe and interface, it is qualified.

[0003] The water filling test is the main means to test the tightness of drainage pipes and their interfaces. However, the water filling test products currently used in the market are basically air bags. There are many problems with the use of air bags. First, the air bags are prone to aging, which will easily leak and fail to maintain the test pressure. The air bags cannot seal the cross section of the drainage pipe. Second, after the test, when the air bags are removed, the sealed drainage will not be discharged without management, resulting in a dirty test environment. Sometimes the air bags will be washed away by water, causing pipe blockage and unnecessary pipe clearing work. Third, when using air bags for water filling tests, an air pump or air pumping equipment must be prepared, which makes the water filling test troublesome. Utility Model Content

[0004] In view of the above problems, the utility model provides a plugging device for water filling test, which is used to plug the pipe section, conduct water filling test on the pipe, and check the tightness of the pipe connection, so as to solve the above problems existing in the existing water filling test using airbags.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A plugging device for water filling test comprises a hollow threaded rod, a rubber tube, a metal pressure plate and a rotating hand wheel, wherein the hollow threaded rod comprises a threaded rod body and an annular wing plate connected to the upper end of the threaded rod body, the rubber tube is a hollow cylindrical structure, and limiting grooves are arranged on both upper and lower end surfaces of the rubber tube, the annular wing plate of the hollow threaded rod is arranged in the limiting groove on the upper end surface of the rubber tube, the metal pressure plate is sleeved outside the threaded rod body and limited in the limiting groove on the lower end surface of the rubber tube, a rotating hand wheel is arranged on the threaded rod body below the metal pressure plate, which is used to provide extrusion force to the rubber tube by manual rotation, and a ball valve is arranged at the lower end of the threaded rod body for drainage.

[0007] As a further technical solution, the size of the annular wing plate of the hollow threaded rod matches the size of the limiting groove on the upper end surface of the rubber tube.

[0008] As a further technical solution, the size of the metal pressure plate matches the size of the limiting groove on the lower end surface of the rubber tube.

[0009] As a further technical solution, the rotating hand wheel has an internal thread, and the internal thread matches the external thread of the threaded rod body.

[0010] As a further technical solution, the limiting groove on the upper end surface and the limiting groove on the lower end surface of the rubber tube have the same size.

[0011] Compared with the prior art, the device of the utility model has the following beneficial effects:

[0012] (1) The device does not require any additional auxiliary equipment and can quickly seal the drainage section by simply turning the hand wheel manually;

[0013] (2) It can quickly seal the pipe section and has a certain pressure bearing capacity;

[0014] (3) After the test is completed, the valve can be opened to drain the test water in a managed manner;

[0015] (4) The equipment is small and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the plugging device for water injection test of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the plugging device for water injection test of the utility model;

[0018] Figure 3 This is a schematic diagram of the initial state of the water filling test of the utility model device;

[0019] Figure 4 This is a schematic diagram of the plugging state of the water filling test of the utility model device;

[0020] In the figure: 1. hollow threaded rod; 11. threaded rod body; 12. annular wing plate; 2. rubber tube; 21. limit groove; 3. metal pressure plate; 4. rotating hand wheel; 5. ball valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0022] like Figure 1-Figure 2 As shown, a plugging device for water filling test comprises a hollow threaded rod 1, a rubber tube 2, a metal pressure plate 3 and a rotating hand wheel 4, wherein the hollow threaded rod 1 comprises a threaded rod body 11 and an annular wing plate 12 connected to the upper end of the threaded rod body 11, the rubber tube 2 is a hollow cylindrical structure, and limiting grooves 21 are arranged on the upper and lower end surfaces of the rubber tube 2, the annular wing plate 12 of the hollow threaded rod 1 is arranged in the limiting groove 21 on the upper end surface of the rubber tube 2, the metal pressure plate 3 is sleeved outside the threaded rod body 11 and limited in the limiting groove 21 on the lower end surface of the rubber tube 2, a rotating hand wheel 4 is arranged on the threaded rod body 11 below the metal pressure plate 3, the rotating hand wheel 4 has an internal thread, and the internal thread matches the external thread of the threaded rod body 11, and is used to provide extrusion force to the rubber tube 2 by manual rotation, and a ball valve 5 is arranged at the lower end of the threaded rod body 11 for draining water after the water filling test.

[0023] Preferably, the size of the annular wing plate 12 of the hollow threaded rod 1 matches the size of the limiting groove 21 on the upper end surface of the rubber tube 2 ; the size of the metal pressure plate 3 matches the size of the limiting groove 21 on the lower end surface of the rubber tube 2 .

[0024] Preferably, the limiting groove 21 on the upper end surface of the rubber tube 2 and the limiting groove 21 on the lower end surface are arranged to have the same size.

[0025] In summary, the utility model device has the following characteristics:

[0026] 1. The rubber tube 2 has a limiting groove 21, so that the rubber tube 2 is stuck in the position limited by the main body of the hollow threaded rod 1, and the metal pressing plate 3 is fixed in the lower limiting groove 21 of the rubber tube;

[0027] 2. The hollow threaded rod 1 is hollow. After the test is completed, the test water is discharged from the hollow position of the threaded rod;

[0028] 3. The upper end of the hollow threaded rod 1 and the metal pressure plate 3 are integrated, and the lower end can be connected to a valve or a hose with a valve.

[0029] When the utility model device is used for water filling test, refer to Figure 3 and Figure 4First, place the assembled device at the cross-section of the pipe to be blocked, and limit the annular wing plate 12 and the metal pressure plate 3 to the limit grooves 21 of the upper and lower end surfaces of the rubber tube 2 respectively. Then, through the 90-degree inspection port, manually operate the rotating hand wheel 4 to rotate and move in the direction close to the rubber tube 2, and the metal pressure plate 3 transmits the force to the rubber tube 2. The rubber tube 2 is bent and deformed due to the extrusion pressure on the upper and lower end surfaces. The middle part of the rubber tube 2 protrudes outward and finally forms a seal in close contact with the inner wall of the pipe. Finally, water is poured into the upper part for a water filling test. After the experiment, open the ball valve 5 at the lower end of the threaded pipe body 11, and discharge the water for the water filling test through the hollow pipe inside the threaded pipe body 11. After the discharge, manually rotate the rotating hand wheel 4 to rotate and move in the direction away from the rubber tube 2. The rubber tube 2 returns to its original state under the action of the elastic force. Finally, take out the entire device to complete the water filling test.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A plugging device for water filling test, characterized in that: The invention comprises a hollow threaded rod (1), a rubber tube (2), a metal pressure plate (3) and a rotating hand wheel (4). The hollow threaded rod (1) comprises a threaded rod body (11) and an annular wing plate (12) connected to the upper end of the threaded rod body (11). The rubber tube (2) is a hollow cylindrical structure. The upper and lower end surfaces of the rubber tube (2) are both provided with limiting grooves (21). The annular wing plate (12) of the hollow threaded rod (1) is arranged in the limiting groove (21) on the upper end surface of the rubber tube (2). The metal pressure plate (3) is sleeved outside the threaded rod body (11) and limited in the limiting groove (21) on the lower end surface of the rubber tube (2). A rotating hand wheel (4) is arranged on the threaded rod body (11) below the metal pressure plate (3) for providing extrusion force to the rubber tube (2) by manual rotation. A ball valve (5) is arranged at the lower end of the threaded rod body (11) for draining water.

2. A plugging device for water flooding test according to claim 1, characterized in that: The size of the annular wing plate (12) of the hollow threaded rod (1) matches the size of the limiting groove (21) on the upper end surface of the rubber tube (2).

3. A plugging device for water flooding test according to claim 1, characterized in that: The size of the metal pressing plate (3) matches the size of the limiting groove (21) on the lower end surface of the rubber cylinder (2).

4. A plugging device for water flooding test according to claim 1, characterized in that: The rotating hand wheel (4) has an internal thread, and the internal thread matches the external thread of the threaded rod body (11).

5. A plugging device for water flooding test according to claim 1, characterized in that: The limiting groove (21) on the upper end surface of the rubber tube (2) and the limiting groove (21) on the lower end surface have the same size.

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