Anti-rust device for grouting sleeve in prefabricated part

Abstract

The anti-rust device for the grouting sleeve in the prefabricated part comprises a plug, a limiting plate is arranged on the bottom face of the plug, an anti-rust column is arranged on the top face of the plug, a VCI anti-rust film is arranged on the surface of the anti-rust column, an inner cavity is formed in the anti-rust column, and moisture absorption materials are arranged in the inner cavity. And a through hole for communicating the inner cavity with the outside is formed in the surface of the anti-rust column. The sealing device is convenient to use, controllable in cost and capable of effectively conducting sealing and rust prevention on the sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to a rust-proof device for a grouting sleeve in a prefabricated component. Background Art

[0002] Prefabricated components are one of the development directions of green building structures in my country. Through factory prefabrication and on-site assembly, they can greatly reduce problems such as dust and noise during on-site construction and also improve construction progress.

[0003] One of the core elements in prefabricated components is the sleeve. The sleeve can be stacked and stored before the component is produced and undergoes overall rust-proof treatment. After the component is prepared, since the component maintenance needs to be carried out in a high humidity environment and the component will undergo transportation and stacking before use, the sleeve in the existing component will be exposed to the air, and it is easy to rust from the opening at the bottom of the sleeve to the inside of the grouting sleeve. The rusted sleeve directly affects the quality of the grouting connection.

[0004] Therefore, there is an urgent need for a device that can prevent the inside of the sleeve from rusting during transportation and other processes. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a rust-proof device for a grouting sleeve in a prefabricated component, which is easy to use, has controllable costs, and can effectively seal and rust-proof the sleeve.

[0006] In order to solve the above technical problems, the utility model provides an anti-rust device for the grouting sleeve in the prefabricated component, including a plug, a limited position convex portion is arranged on the periphery of the bottom surface of the plug, an anti-rust column is arranged on the top surface of the plug, a VCI anti-rust film is arranged on the surface of the anti-rust column, an inner cavity is arranged in the anti-rust column, a hygroscopic material is arranged in the inner cavity, and a through hole is arranged on the surface of the anti-rust column to connect the inner cavity with the outside.

[0007] Furthermore, the plug includes a base plate, a rubber plug is arranged on the surface of the base plate, the anti-rust column passes through the rubber plug and is connected to the base plate, a step portion is arranged on the anti-rust column, and the step portion cooperates with the base plate to form an installation space for the rubber plug.

[0008] Furthermore, an internal thread protrusion is provided on the bottom plate, and the small end of the step portion of the anti-rust column is threadedly connected to the internal thread protrusion.

[0009] Furthermore, an annular convex portion is arranged on the outer ring surface of the rubber plug.

[0010] Furthermore, the VCI anti-rust film is wound on the anti-rust column, and one side of the VCI anti-rust film along the winding direction is bonded and fixed to the anti-rust column.

[0011] Furthermore, an avoidance groove is provided on the surface of the limiting protrusion located on the blocking side.

[0012] Furthermore, the hygroscopic material is polyester foam or a desiccant.

[0013] Furthermore, an operation port communicating with the inner cavity is provided at the end of the anti-rust column, and an end cover is provided on the operation port.

[0014] Beneficial effects of the utility model:

[0015] 1. Block the bottom opening of the grouting sleeve to form a closed space to prevent external water vapor from entering the sleeve and causing corrosion and rust on the inner wall;

[0016] 2. The anti-rust column extends into the interior of the grouting sleeve, and the anti-rust factor sublimates and volatilizes in the sleeve through the VCI anti-rust film set on the surface, diffuses and penetrates to the inner wall surface to form a dense protective film layer with a thickness of a single molecule, thereby effectively protecting the inner wall of the grouting sleeve from rust.

[0017] 3. The hygroscopic material in the inner cavity of the anti-rust column can absorb the water molecules in the air in the sleeve, thereby ensuring the internal dryness and reducing the risk of rust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a top view schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the explosion structure of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0023] Reference Figure 1 and Figure 2 As shown, an embodiment of the utility model of the rust prevention device for the grouting sleeve in the prefabricated component includes a plug 1, a limited position protrusion 2 is arranged on the periphery of the bottom surface of the plug, an anti-rust column 3 is arranged on the top surface of the plug, a VCI anti-rust film 4 is arranged on the surface of the anti-rust column, an inner cavity 5 is arranged in the anti-rust column, a hygroscopic material 6 is arranged in the inner cavity, and a through hole 7 that connects the inner cavity with the outside is arranged on the surface of the anti-rust column.

[0024] When in use, directly insert the anti-rust column with VCI anti-rust film from the bottom opening of the grouting sleeve, and place the plug against the bottom opening of the grouting sleeve, then use a hammer to knock the bottom surface of the plug to insert the plug into the grouting sleeve. Due to the setting of the limiting convex part, the diameter of the limiting convex part is larger than the diameter of the grouting sleeve, so the plug only blocks the bottom opening of the grouting sleeve and cannot completely enter the bottom opening. At this time, the installation can be completed, and the operation is convenient and reliable; the grouting outlet and grouting hole that pass through the surface of the prefabricated component and the grouting sleeve are blocked by the plug, which is a routine operation when the component leaves the factory. Therefore, when the plug blocks the bottom opening of the grouting sleeve, a sealed environment is formed inside the grouting sleeve, and water in the external air cannot enter the sealed environment, that is, it is guaranteed during transportation and storage, and in this environment, the hygroscopic material can absorb moisture in the environment, and the VCI anti-rust film volatilizes the anti-rust factor to form a protective film layer on the inner wall of the grouting sleeve, and finally forms a good anti-rust effect.

[0025] Among them, in order to ensure that the hygroscopic material can play a role, the through holes set on the surface of the anti-rust column are helpful for the hygroscopic material to absorb the moisture inside the grouting sleeve. The through holes can be densely and evenly distributed on the surface of the anti-rust column to increase the contact area between the hygroscopic material and the external air. Based on the setting of the above through holes, if the VCI anti-rust film is bonded to the entire surface of the anti-rust column, it will cause the through holes to be blocked. Therefore, a partial bonding form is adopted for connection. Specifically, the VCI anti-rust film is wound on the anti-rust column, and the VCI anti-rust film is bonded and fixed to the anti-rust column along one side of the winding direction. The width of the fixed part is 2-5mm, which ensures that the VCI anti-rust film cannot be easily separated from the anti-rust column. Before the anti-rust column is inserted into the grouting sleeve, the wound VCI anti-rust film is opened to one side or loosely sleeved on the anti-rust column, so that while not affecting the volatilization of the VCI anti-rust film, it is ensured that there is a gap between the anti-rust column and the VCI anti-rust film to ensure the adsorption effect of the hygroscopic material. VCI anti-rust film can be wound in multiple layers on the anti-rust column to improve the volatile protection effect.

[0026] The above-mentioned hygroscopic material is polyester foam or desiccant. In order to facilitate the placement of the hygroscopic material, an operation port that is connected to the inner cavity is provided at the end of the anti-rust column, and the polyester foam or desiccant can be directly inserted into the inner cavity from the operation port. The polyester foam has a certain amount of compression, and after the polyester foam is inserted into the anti-rust column, it will not fall off easily. The desiccant has a better water absorption effect. After the desiccant is placed in the anti-rust column, an end cover can be provided on the operation port to prevent the desiccant from falling out.

[0027] In the process of inserting the plug into the grouting sleeve, the plug needs to be deformed to form an interference fit effect to ensure that the plug will not fall out of the grouting sleeve. Therefore, the material of the plug can be plastic, and the grouting sleeve is made of metal. In the process of the plug entering the grouting sleeve by knocking, the plastic material is squeezed and deformed, thereby achieving an interference fit effect.

[0028] When the above scheme is adopted, the plug made of plastic material cannot be reused after deformation, or cannot achieve a good plugging and sealing effect when used again. Therefore, the plug is designed to include a bottom plate 8, a rubber plug 9 is arranged on the surface of the bottom plate, and the anti-rust column passes through the rubber plug and is connected to the bottom plate. The anti-rust column is provided with a step portion 10, and the step portion cooperates with the bottom plate to form an installation space for the rubber plug. The rubber plug and the bottom plate are used to form a detachable plugging structure, in which the rubber plug is fixed to the bottom plate by the anti-rust column, and finally forms an integral structure. When the rubber plug is inserted into the grouting sleeve, the material itself has the ability of adaptive deformation, and can be plugged tightly in the grouting sleeve. After it is pulled out, it can be effectively reset and can be recycled.

[0029] In addition, the above-mentioned combined structure is more convenient for preparation. When a part is damaged, it can be replaced separately and continue to be used, which greatly reduces the use cost and has a high recycling rate. Since the bottom plate and the anti-rust column need to be fixed together, an internal thread convex portion 11 is provided on the bottom plate, and the small end of the step portion of the anti-rust column is threadedly connected to the internal thread convex portion, which is convenient and reliable to operate. In addition, an annular convex portion 12 is provided on the outer ring surface of the rubber plug, so that the rubber plug can be better deformed and the sealing effect is better.

[0030] When the prefabricated components need to be assembled, the anti-rust device needs to be removed. During installation, the plug is inserted into the grouting sleeve and the limiting protrusion is in contact with the bottom surface of the grouting sleeve, which makes it difficult to remove. Therefore, an avoidance groove 13 is provided on the surface of the limiting protrusion on one side of the plug. The plug can be pulled out by inserting a screwdriver or a flat metal into the avoidance groove and then prying it outwards. Due to the deformation ability of the rubber plug material, the prying action will not cause substantial damage to the plug, and it can be reused and is easy to operate.

[0031] The above embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in this technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A rust prevention device for grouting sleeves in prefabricated components, characterized in that: It includes a plug, a limited position convex portion is arranged on the periphery of the bottom surface of the plug, an anti-rust column is arranged on the top surface of the plug, a VCI anti-rust film is arranged on the surface of the anti-rust column, an inner cavity is arranged in the anti-rust column, a hygroscopic material is arranged in the inner cavity, and a through hole that connects the inner cavity with the outside is arranged on the surface of the anti-rust column.

2. The rust prevention device for the grouting sleeve in the prefabricated component according to claim 1, characterized in that: The plug includes a bottom plate, a rubber plug is arranged on the surface of the bottom plate, the anti-rust column passes through the rubber plug and is connected to the bottom plate, a step portion is arranged on the anti-rust column, and the step portion cooperates with the bottom plate to form an installation space for the rubber plug.

3. The rust prevention device for the grouting sleeve in the prefabricated component according to claim 2, characterized in that: The bottom plate is provided with an internal thread convex portion, and the small end of the step portion of the anti-rust column is threadedly connected with the internal thread convex portion.

4. The rust prevention device for the grouting sleeve in the prefabricated component according to claim 2, characterized in that: An annular convex portion is arranged on the outer ring surface of the rubber plug.

5. The rust prevention device for grouting sleeves in prefabricated components according to claim 1, characterized in that: The VCI anti-rust film is wound on the anti-rust column, and one side of the VCI anti-rust film along the winding direction is bonded and fixed to the anti-rust column.

6. The rust prevention device for the grouting sleeve in the prefabricated component according to claim 1, characterized in that: The surface of the limiting protrusion located on the blocking side is provided with an avoidance groove.

7. The rust prevention device for grouting sleeves in prefabricated components according to claim 1, characterized in that: The hygroscopic material is polyester foam or desiccant.

8. The rust prevention device for the grouting sleeve in the prefabricated component according to claim 7, characterized in that: The end of the anti-rust column is provided with an operation port which is communicated with the inner cavity, and the operation port is provided with an end cover.

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