A rust prevention device for exposed steel bars embedded in building construction and its operation method

Abstract

The present invention discloses a construction engineering pre-buried exposed steel bar rust prevention device and an operation method thereof. The oxygen-consuming rust prevention device comprises an oxygen-consuming spherical shell, a conduit and a heating spherical shell which are sequentially connected and communicated with each other. The oxygen-consuming spherical shell is fixedly arranged on the rust prevention sleeve. The bottom of the oxygen-consuming spherical shell is provided with an air outlet pipe. The conduit is arranged on the upper side of the bottom of the oxygen-consuming spherical shell. The heating spherical shell is provided with a connecting pipe, which is detachably connected to the conduit. The heating spherical shell is provided with an oxygen-consuming reactant. The oxygen-consuming rust prevention device in the present invention consumes oxygen in the rust prevention sleeve and isolates the outside air, so that the conditions for steel bar oxidation and rusting are greatly limited, and a good rust prevention effect is achieved. At the same time, the present invention does not require vacuuming and is convenient to operate.

Description

Technical field:

[0001] The invention belongs to the technical field of rust prevention devices, and in particular relates to a rust prevention device for pre-buried exposed steel bars in a construction project and an operating method thereof. Background technology:

[0002] Rebar is a steel material used for reinforced concrete and prestressed reinforced concrete. At present, pre-buried steel bars are often involved in the construction process of construction projects. Most of the pre-buried steel bars are exposed to facilitate subsequent installation and overlap. However, during the construction process, exposed steel bars are very prone to rust. As time goes by, the cross-section of the steel bars is continuously weakened, resulting in the formation of weak links in the overall structure at the joints after the concrete is constructed, and even causing structural damage accidents.

[0003] In addition, the Chinese patent authorization announcement number is CN103967287B, and the patent name is "Anti-rust device for pre-embedded exposed steel bars in construction projects", which discloses an anti-rust device for pre-embedded exposed steel bars in construction projects, including an anti-rust sleeve, a sealing device and an exhaust hole. The exhaust hole is mainly used to achieve vacuum rust prevention, but it requires additional vacuum equipment and is inconvenient to operate. Summary of the invention:

[0004] In order to solve the deficiencies in the prior art, the present invention provides a convenient-to-operate anti-rust device for pre-buried exposed steel bars in construction engineering and an operating method thereof.

[0005] The technical solution of the present invention to solve the technical problem is as follows:

[0006] A rust prevention device for embedded exposed steel bars in construction projects comprises exposed steel bars, one end of which is embedded in embedded concrete, and the other end of which is arranged outside the embedded concrete and is sleeved with an anti-rust sleeve, a sealing joint with a protective structure is arranged at a pipe opening at one end of the anti-rust sleeve, and the sealing joint is fixed to the embedded concrete, and an oxygen-consuming rust prevention device is arranged at a pipe opening at the other end of the anti-rust sleeve; the oxygen-consuming rust prevention device comprises an oxygen-consuming spherical shell, a conduit and a heating spherical shell which are connected in sequence, the oxygen-consuming spherical shell is fixedly arranged on the anti-rust sleeve, an air outlet pipe is arranged at the bottom of the oxygen-consuming spherical shell, the conduit is arranged on the upper side of the bottom of the oxygen-consuming spherical shell, a connecting pipe is arranged on the heating spherical shell, the connecting pipe is detachably connected to the conduit, and an oxygen-consuming reactant is arranged in the heating spherical shell.

[0007] Furthermore, the oxygen-consuming reactant is aluminum powder and / or magnesium powder.

[0008] Furthermore, the diameter of the connecting pipe is larger than the diameter of the conduit, and the conduit is sleeved on the connecting pipe and threadedly connected thereto.

[0009] Furthermore, a one-way air outlet valve is provided on the air outlet pipe.

[0010] Furthermore, the sealing joint includes a sealing pipe seat fixedly arranged on the exposed steel bar, a protective cover is fixedly connected to the outer side of the sealing pipe seat, a cover opening of the protective cover is fixed to the embedded concrete and a through hole is opened in the middle of the protective cover.

[0011] Furthermore, a sealing rubber sleeve is provided between the sealing pipe seat and the exposed steel bar, and the length of the sealing rubber sleeve is greater than the length of the sealing pipe seat.

[0012] Furthermore, the through hole is provided with an internal thread, the outer side of the sealing tube seat is provided with an external thread, and the protective cover is threadedly connected to the sealing tube seat through the through hole.

[0013] Furthermore, an elastic rubber pad is provided between the cover opening of the protective cover and the embedded concrete, and the length of the elastic rubber pad is greater than the width of the cover opening of the protective cover.

[0014] An operating method of a pre-buried exposed steel bar rust prevention device for a construction project comprises the following steps:

[0015] Step 1: Place the anti-rust sleeve on the exposed steel bars;

[0016] Step 2: Install a sealing joint at the pipe opening of the anti-rust sleeve close to one end of the embedded concrete, and install an oxygen-consuming anti-rust device at the pipe opening of the other end;

[0017] Step 3: Heat the heating spherical shell, and the oxygen-consuming reactants inside the spherical shell will consume the air in the rust-proof sleeve, so that a vacuum is formed in the rust-proof sleeve.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1) the oxygen-consuming anti-rust device in the present invention consumes oxygen in the anti-rust sleeve and isolates the outside air, so that the conditions for steel bar oxidation and rusting are greatly limited, and a good anti-rust effect is achieved. At the same time, the present invention does not require vacuuming and is easy to operate; 2) the oxygen-consuming reactant in the spherical shell is heated, and the oxygen-consuming reactant is heated by the spherical shell and consumes the oxygen in the anti-rust sleeve; 3) the oxygen-consuming reactant is set as aluminum powder and magnesium powder, which reacts with oxygen to generate metal oxides during the heating process. In addition, the aluminum powder and magnesium powder react with water in the air during the heating process, and further consumes water, which is beneficial to rust prevention; 4) the sealing rubber sleeve arranged between the sealed pipe seat and the exposed steel bar further improves the sealing and fixing effect; 5) the operation method of the present invention is simple and effectively improves the anti-rust effect. Description of the drawings:

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0020] Figure 1 It is a structural schematic diagram of a rust-proof device for pre-buried exposed steel bars in a construction project of the present invention;

[0021] Figure 2 The present invention is a structural schematic diagram of a protective cover in a rust prevention device for pre-buried exposed steel bars in a construction project.

[0022] The numbers in the figure are as follows: 1-embedded concrete; 2-protective cover; 3-through hole; 4-sealed pipe seat; 5-rust-proof sleeve; 6-exposed steel bar; 7-oxygen-consuming spherical shell; 8-conduit; 9-connecting pipe; 10-heating spherical shell; 11-oxygen-consuming reactant; 12-one-way air outlet valve; 13-air outlet pipe; 14-sealing rubber sleeve; 15-elastic rubber pad. Specific implementation method:

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown, a construction project embedded exposed steel bar rust prevention device includes an exposed steel bar 6, one end of the exposed steel bar 6 is embedded in the embedded concrete 1, and the other end is arranged outside the embedded concrete 1 and is sleeved with an anti-rust sleeve 5. A sealing joint with a protective structure is arranged at the pipe opening of one end of the anti-rust sleeve 5, and the sealing joint is fixed on the embedded concrete 1, and an oxygen-consuming anti-rust device is arranged at the pipe opening of the other end of the anti-rust sleeve 5.

[0025] The oxygen-consuming rust-proof device comprises an oxygen-consuming spherical shell 7, a conduit 8 and a heating spherical shell 10 which are sequentially connected and connected. The oxygen-consuming spherical shell 7 is fixed to the anti-rust sleeve 5. The bottom of the oxygen-consuming spherical shell 7 is provided with an air outlet pipe 13, which is convenient for exhausting air during the heating process and plays a pressure relief role. The conduit 8 is provided on the upper side of the bottom of the oxygen-consuming spherical shell 7. The heating spherical shell 10 is provided with a connecting pipe 9, which is detachably connected to the conduit 8. The heating spherical shell 7 is provided with an oxygen-consuming reactant 11. When working, the heating spherical shell 10 is heated, and the oxygen-consuming reactant 11 consumes the oxygen in the anti-rust sleeve 5 by heat.

[0026] In this embodiment, the oxygen-consuming reactant 11 is aluminum powder and / or magnesium powder. During the heating process, the aluminum powder and magnesium powder react with oxygen to generate metal oxides. In addition, during the heating process, the aluminum powder and magnesium powder react with water in the air to further consume water, which is beneficial to rust prevention.

[0027] In this embodiment, the diameter of the connection 9 is larger than the diameter of the conduit 8 , and the conduit 8 is sleeved on the connection pipe 9 and threadedly connected thereto, so as to facilitate installation and disassembly and to facilitate taking and placing of the oxygen-consuming reactant 11 .

[0028] In this embodiment, a one-way air outlet valve 12 is provided on the air outlet pipe 13, which is conducive to exhausting the original air and creating a certain vacuum degree, which is further conducive to rust prevention.

[0029] In this embodiment, the sealing joint includes a sealing pipe seat 4 fixedly arranged on the exposed steel bar 6, and a protective cover 2 is fixedly connected to the outside of the sealing pipe seat 4. The cover of the protective cover 2 is fixed to the embedded concrete 1 and a through hole 3 is opened in the middle of the protective cover 2.

[0030] In this embodiment, a sealing rubber sleeve 14 is arranged between the sealing pipe seat 4 and the exposed steel bar 6. The length of the sealing rubber sleeve 14 is greater than the length of the sealing pipe seat 4, that is, the sealing rubber sleeve 14 is squeezed on the sealing pipe seat 4 and the exposed steel bar 6 and extends to the exposed steel bar near the embedded concrete 1, thereby further improving the sealing and fixing effect.

[0031] In this embodiment, the through hole 3 is provided with an internal thread, the outer side of the sealing tube seat 4 is provided with an external thread, and the protective cover 2 is threadedly connected to the sealing tube seat 4 through the through hole 3 .

[0032] As a further feature of this embodiment, an elastic rubber pad 15 is provided between the cover opening of the protective cover 2 and the embedded concrete 1, and the length of the elastic rubber pad 15 is greater than the width of the cover opening of the protective cover 2, and the elastic rubber pad 15 is used for waterproof, dustproof and sealing protection. In addition, the diameter of the sealing pipe seat 4 is greater than the anti-rust sleeve 5, and the protective cover 2 can move freely on the anti-rust sleeve 5 through the passage, which further facilitates the protective cover 1 to be put on the anti-rust sleeve 5 in advance, and is convenient for installation.

[0033] Example 2

[0034] like Figure 1 to Figure 2 As shown, based on the structure of Example 1, an operation method of a construction engineering pre-buried exposed steel bar rust prevention device includes the following specific steps:

[0035] Step 1: Install the anti-rust sleeve on the pre-buried exposed steel bars of the building;

[0036] Step 2: Install a sealing joint at the pipe opening of the anti-rust sleeve close to one end of the embedded concrete, and install an oxygen-consuming anti-rust device at the pipe opening of the other end;

[0037] Step 3: Heat the heating spherical shell, and the oxygen-consuming reactants inside the spherical shell will consume the air in the rust-proof sleeve, so that a vacuum is formed in the rust-proof sleeve.

[0038] The working principle of the present invention is as follows: when working, the oxygen-consuming anti-rust device consumes oxygen in the anti-rust sleeve and isolates the outside air, so that the conditions for steel bar oxidation and rusting are greatly limited, achieving a good anti-rust effect. At the same time, the present invention does not require vacuuming and is easy to operate.

[0039] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

[0040] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A construction engineering pre-buried exposed steel bar rust prevention device, comprising an exposed steel bar (6), one end of the exposed steel bar (6) is buried in the pre-buried concrete (1), and the other end is arranged outside the pre-buried concrete (1) and is sleeved with an anti-rust sleeve (5), characterized in that: A sealing joint with a protective structure is provided at the pipe opening at one end of the rust-proof sleeve (5), and the sealing joint is fixed on the embedded concrete (1). An oxygen-consuming rust-proof device is provided at the pipe opening at the other end of the rust-proof sleeve (5); the oxygen-consuming rust-proof device comprises an oxygen-consuming spherical shell (7), a conduit (8) and a heating spherical shell (10) which are sequentially connected and communicated with each other. The oxygen-consuming spherical shell (7) is fixed to the rust-proof sleeve (5). An air outlet pipe (13) is provided at the bottom of the oxygen-consuming spherical shell (7). The conduit (8) is provided at the upper side of the bottom of the oxygen-consuming spherical shell (7). A connecting pipe (9) is provided on the heating spherical shell (10), and the connecting pipe (9) is detachably connected to the conduit (8). An oxygen-consuming reactant (11) is provided in the heating spherical shell (10); the oxygen-consuming reactant (11) is aluminum powder and / or magnesium powder; and a one-way air outlet valve (12) is provided on the air outlet pipe (13).

2. The rust-proof device for pre-buried exposed steel bars in construction engineering according to claim 1, characterized in that: The diameter of the connecting pipe (9) is larger than the diameter of the conduit (8), and the conduit (8) is sleeved on the connecting pipe (9) and threadedly connected thereto.

3. The anti-rust device for pre-buried exposed steel bars in construction engineering according to claim 1, characterized in that: The sealing joint comprises a sealing pipe seat (4) fixedly arranged on the exposed steel bar (6), a protective cover (2) being fixedly connected to the outside of the sealing pipe seat (4), a cover opening of the protective cover (2) being fixed to the embedded concrete (1), and a through hole (3) being provided in the middle of the protective cover (2).

4. The anti-rust device for pre-buried exposed steel bars in construction engineering according to claim 3, characterized in that: A sealing rubber sleeve (14) is provided between the sealing pipe seat (4) and the exposed steel bar (6), and the length of the sealing rubber sleeve (14) is greater than the length of the sealing pipe seat (4).

5. The anti-rust device for pre-buried exposed steel bars in construction engineering according to claim 3, characterized in that: The through hole (3) is provided with an internal thread, the outer side of the sealing tube seat (4) is provided with an external thread, and the protective cover (2) is threadedly connected to the sealing tube seat (4) through the through hole (3).

6. The rust-proof device for pre-buried exposed steel bars in construction engineering according to claim 3, characterized in that: An elastic rubber pad (15) is provided between the cover opening of the protective cover (2) and the embedded concrete (1), and the length of the elastic rubber pad (15) is greater than the width of the cover opening of the protective cover (2).

7. The method for operating the anti-rust device for pre-buried exposed steel bars in construction engineering according to any one of claims 1 to 6, characterized in that: The specific steps include: Step 1: placing the anti-rust sleeve (5) on the exposed steel bar (6); Step 2: Install a sealing joint at the pipe opening of the anti-rust sleeve (5) close to one end of the embedded concrete (1), and install an oxygen-consuming anti-rust device at the pipe opening of the other end; Step 3: The heating spherical shell (10) is heated, and the oxygen-consuming reactant (11) inside the heating spherical shell reacts to consume the air in the rust-proof sleeve (5), so that a vacuum is formed in the rust-proof sleeve (5).

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