Corrosion-resistant steel cover

Abstract

The utility model relates to the field of steel covers, and discloses a corrosion-resistant steel cover which is characterized in that a drainage through hole is formed in the middle of a steel cover main body, a plurality of drainage grooves are uniformly formed in the upper part of the steel cover main body, a plurality of air guide grooves are uniformly formed in the upper part of the steel cover main body, and a plurality of air holes are uniformly formed in the steel cover main body; the multiple air holes correspond to the multiple air guide grooves in position, an annular air pipe and a pump are arranged at the bottom of the steel cover body, the annular air pipe communicates with the multiple air holes, an upper anti-corrosion layer is arranged above the steel cover body, a lower anti-corrosion layer is arranged below the steel cover body, and the inner ends of the multiple drainage grooves communicate with the drainage through hole. The extension direction of the drainage grooves is inclined towards the inner end, the air guide grooves are located between every two adjacent drainage grooves, slopes are arranged at the bottoms of the air guide grooves and point to the drainage through holes, and the outer wall faces of the air guide grooves are provided with radians, so that the situation that rainwater stays on the surface of the steel cover for a long time, and consequently the steel cover is corroded to a certain degree can be avoided; and corrosion resistance of the bottom of the steel cover is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel covers, in particular to a corrosion-resistant steel cover. Background Art

[0002] With the development of urban construction, various pipelines are installed underground in cities for laying urban power supply cables, communication cables or for sewage discharge. Vertical shafts are installed at the intersections or important nodes of underground pipelines to facilitate maintenance of the pipelines. At the same time, for the safety of road personnel, steel covers are installed on the vertical shafts.

[0003] On rainy days, rainwater will accumulate on the upper surface of the steel cover. If the rainwater on the steel cover cannot be drained away, the rainwater will stay on the surface of the steel cover for a long time, which will cause certain corrosion to the steel cover. In addition, there is a large amount of garbage in the urban sewage pipe, and due to the poor air permeability in the sewage pipe, these garbage will easily produce methane, ethane, hydrogen sulfide and other gases after fermentation. The bottom of the steel cover is in this gas for a long time, which will cause certain corrosion to the steel cover. Therefore, we propose a corrosion-resistant steel cover. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a corrosion-resistant steel cover to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: The utility model discloses a corrosion-resistant steel cover, including a steel cover body, a drainage through hole is arranged in the middle of the steel cover body, a plurality of drainage grooves are evenly arranged on the top of the steel cover body, and the plurality of drainage grooves are distributed in a circular array, a plurality of air guide grooves are evenly arranged on the top of the steel cover body, a plurality of air holes are evenly arranged on the steel cover body, and the plurality of air holes correspond to the positions of the plurality of air guide grooves, an annular air pipe and a pump are arranged at the bottom of the steel cover body, the pump is connected to the annular air pipe, and the annular air pipe is connected to the plurality of air holes, an upper anti-corrosion layer is arranged above the steel cover body, and a lower anti-corrosion layer is arranged below the steel cover body.

[0006] Furthermore, the inner ends of the plurality of drainage grooves are connected to the drainage through hole, and the extension direction of the drainage grooves is inclined toward the inner ends.

[0007] Furthermore, the air guide groove is located between two adjacent drainage grooves, a slope is provided at the bottom of the air guide groove, the slope points to the drainage through hole, and an outer wall surface of the air guide groove is provided with an arc.

[0008] Furthermore, the upper anti-corrosion layer includes an asphalt coating applied on the steel cover body, and a fluorocarbon paint layer is applied on the asphalt coating.

[0009] Furthermore, the lower anti-corrosion layer includes a water-based epoxy primer layer coated below the steel cover body, an anti-rust coating is coated on the outer side of the water-based epoxy primer layer, and a salt spray resistant coating is coated on the outer side of the anti-rust coating.

[0010] Furthermore, a desiccant bag is detachably provided at the bottom of the steel cover body, and the desiccant bag is made of water-absorbing silica gel particles wrapped in non-woven fabric.

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

[0012] The utility model can improve the wear resistance above the steel cover body and the corrosion resistance of the steel cover body through the structural setting of the upper anti-corrosion layer, and improve the corrosion resistance of the bottom of the steel cover body through the lower anti-corrosion layer.

[0013] The inner ends of multiple drainage grooves are connected to the drainage through-holes, and the extension direction of the drainage grooves is inclined toward the inner ends, so that the water introduced into the drainage grooves is guided to the drainage through-holes, so as to avoid the accumulation of moisture on the surface of the steel cover body, and the moisture stays on the surface of the steel cover body for a long time, thereby causing corrosion to the steel cover body. The air guide groove is located between two adjacent drainage grooves, and the bottom of the air guide groove is provided with a slope, which points to the drainage through-hole. The outer wall surface of the air guide groove is provided with an arc, and the gas discharged from the air hole is discharged through the operation of the pump, and the gas is blown away from the water on the surface of the steel cover body, and then introduced into the drainage groove, and the water is discharged into the drainage through-hole, so as to avoid the accumulation of moisture on the surface of the steel cover body, and the moisture stays on the surface of the steel cover body for a long time, thereby causing corrosion to the steel cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0015] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0016] Figure 3 It is a structural schematic diagram of the lower part of the utility model;

[0017] Figure 4 It is a cross-sectional view of the utility model;

[0018] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0019] In the figure: 1. Steel cover body; 2. Drainage hole; 3. Drainage groove; 4. Air guide groove; 5. Air hole; 6. Annular air pipe; 7. Pump; 8. Asphalt coating; 9. Fluorocarbon paint layer; 10. Water-based epoxy primer layer; 11. Anti-rust coating; 12. Salt spray resistant coating; 13. Drying bag. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 A corrosion-resistant steel cover of the present embodiment includes a steel cover body 1, which is made of high-strength carbon steel. A drainage through hole 2 is arranged in the middle of the steel cover body 1. The drainage through hole 2 is circular, and the residual moisture above the steel cover body 1 is discharged from the drainage through hole 2. A plurality of drainage grooves 3 are evenly arranged on the top of the steel cover body 1. The plurality of drainage grooves 3 are distributed in a circular array, and the edges of the drainage grooves 3 are chamfered. A plurality of air guide grooves 4 are evenly arranged on the top of the steel cover body 1. The air guide grooves 4 are used to guide the gas discharged from the air holes 5. A plurality of air holes 5 are evenly arranged on the steel cover body 1, and the plurality of air holes 5 correspond to the positions of the plurality of air guide grooves 4. An annular air pipe 6 and a pump 7 are arranged at the bottom of the steel cover body 1. The annular air pipe 6 is made of stainless steel. The pump 7 is waterproofed, and a power supply is built in the pump 7. The staff can The pump 7 is removed regularly to charge the power supply, and the pump 7 can be remotely controlled so that the staff can control the operation of the pump 7 after rain. The pump 7 is connected to the annular air pipe 6, and the annular air pipe 6 is connected to multiple air holes 5. The air guide groove 4 guides the gas discharged from the air holes 5 to blow away the water on the surface of the steel cover body 1, and then introduces it into the drainage groove 3 to discharge the water into the drainage through hole 2, thereby avoiding the accumulation of moisture on the surface of the steel cover body 1. The moisture stays on the surface of the steel cover body 1 for a long time, thereby causing corrosion to the steel cover body 1. An upper anti-corrosion layer is arranged above the steel cover body 1 to improve the corrosion resistance of the upper part of the steel cover body 1, and a lower anti-corrosion layer is arranged below the steel cover body 1 to protect the lower part of the steel cover body 1, thereby improving the corrosion resistance of the lower part of the steel cover body 1.

[0022] like Figure 1 As shown, the inner ends of multiple drainage grooves 3 are connected to the drainage through-holes 2, and the extension direction of the drainage grooves 3 is inclined toward the inner ends, so that the water introduced into the drainage grooves 3 is guided into the drainage through-holes 2, thereby avoiding the accumulation of moisture on the surface of the steel cover main body 1. The moisture stays on the surface of the steel cover main body 1 for a long time, thereby causing corrosion to the steel cover main body 1.

[0023] like Figure 1 , 2As shown, the air guide groove 4 is located between two adjacent drainage grooves 3. A slope is provided at the bottom of the air guide groove 4, which points to the drainage through hole 2. The outer wall of the air guide groove 4 is provided with an arc to guide the gas discharged from the air hole 5 to blow away the water on the surface of the steel cover body 1, and then introduce it into the drainage groove 3 to discharge the water into the drainage through hole 2, thereby avoiding the accumulation of moisture on the surface of the steel cover body 1. The moisture stays on the surface of the steel cover body 1 for a long time, thereby causing corrosion to the steel cover body 1.

[0024] like Figure 4 , 5 As shown, the upper anti-corrosion layer includes an asphalt coating 8 applied on the top of the steel cover body 1, and a fluorocarbon paint layer 9 is applied on the top of the asphalt coating 8, which can improve the wear resistance of the top of the steel cover body 1 on the one hand, and improve the corrosion resistance of the steel cover body 1 on the other hand.

[0025] like Figure 4 , 5 As shown, the lower anti-corrosion layer includes a water-based epoxy primer layer 10 coated under the steel cover body 1, an anti-rust coating 11 is coated on the outer side of the water-based epoxy primer layer 10, and a salt spray resistant coating 12 is coated on the outer side of the anti-rust coating 11. The water-based epoxy primer layer 10 can modify the pits on the surface of the iron substrate 1 and improve the smoothness of the product surface. The primer formed under the steel cover body 1 improves the adhesion effect of the anti-rust coating 11. The anti-rust coating 11 and the salt spray resistant coating 12 improve the corrosion resistance of the bottom of the steel cover body 1.

[0026] like Figure 3 As shown, a desiccant bag 13 is detachably provided at the bottom of the steel cover body 1. The desiccant bag 13 is made of water-absorbing silica gel particles wrapped in non-woven fabric, so that the desiccant bag 13 has better water absorption, thereby reducing the humid gas near the bottom of the steel cover body 1.

[0027] In the specific implementation of this embodiment, the wear resistance above the steel cover body 1 can be improved through the structural setting of the upper anti-corrosion layer, and the corrosion resistance of the steel cover body 1 can be improved on the other hand. The corrosion resistance below the steel cover body 1 can be improved through the lower anti-corrosion layer. The water-based epoxy primer layer 10 can modify the pits on the surface of the iron substrate 1 to improve the flatness of the product surface. The primer is formed below the steel cover body 1 to improve the adhesion effect of the anti-rust coating 11. The anti-rust coating 11 and the salt spray resistant coating 12 improve the corrosion resistance below the steel cover body 1. The inner ends of multiple drainage grooves 3 are connected to the drainage through holes 2, and the extension direction of the drainage grooves 3 is inclined toward the inner end. The water is guided into the drainage through hole 2 to avoid moisture accumulation on the surface of the steel cover body 1. The moisture stays on the surface of the steel cover body 1 for a long time, thereby causing corrosion to the steel cover body 1. The air guide groove 4 is located between two adjacent drainage grooves 3. The bottom of the air guide groove 4 is provided with a slope, and the slope points to the drainage through hole 2. The outer wall surface of the air guide groove 4 is provided with an arc. Through the operation of the pump 7, the gas discharged from the air hole 5 is discharged, and the gas is blown away from the water on the surface of the steel cover body 1, and then introduced into the drainage groove 3, and the water is discharged into the drainage through hole 2, thereby avoiding moisture accumulation on the surface of the steel cover body 1. The moisture stays on the surface of the steel cover body 1 for a long time, thereby causing corrosion to the steel cover body 1.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant steel cover, comprising a steel cover body (1), characterized in that: A drainage hole (2) is provided in the middle of the steel cover body (1), a plurality of drainage grooves (3) are evenly provided on the top of the steel cover body (1), and the plurality of drainage grooves (3) are distributed in a circular array, a plurality of air guide grooves (4) are evenly provided on the top of the steel cover body (1), a plurality of air holes (5) are evenly provided on the steel cover body (1), and the plurality of air holes (5) correspond to the positions of the plurality of air guide grooves (4), an annular air pipe (6) and a pump (7) are provided at the bottom of the steel cover body (1), the pump (7) is connected to the annular air pipe (6), and the annular air pipe (6) is connected to the plurality of air holes (5), an upper anti-corrosion layer is provided on the top of the steel cover body (1), and a lower anti-corrosion layer is provided on the bottom of the steel cover body (1).

2. The corrosion-resistant steel cover according to claim 1, characterized in that: The inner ends of the plurality of drainage grooves (3) are connected to the drainage through hole (2), and the extension direction of the drainage grooves (3) is inclined toward the inner ends.

3. The corrosion-resistant steel cover according to claim 2, characterized in that: The air guide groove (4) is located between two adjacent drainage grooves (3), the bottom of the air guide groove (4) is provided with a slope, the slope points to the drainage through hole (2), and the outer wall surface of the air guide groove (4) is provided with an arc.

4. The corrosion-resistant steel cover according to claim 1, characterized in that: The upper anti-corrosion layer comprises an asphalt coating (8) applied on the upper part of the steel cover body (1), and a fluorocarbon paint layer (9) is applied on the upper part of the asphalt coating (8).

5. The corrosion-resistant steel cover according to claim 1, characterized in that: The lower anti-corrosion layer comprises a water-based epoxy primer layer (10) coated below the steel cover body (1), an anti-rust coating (11) is coated on the outer side of the water-based epoxy primer layer (10), and a salt spray resistant coating (12) is coated on the outer side of the anti-rust coating (11).

6. The corrosion-resistant steel cover according to claim 1, characterized in that: A desiccant bag (13) is detachably provided at the bottom of the steel cover body (1), and the desiccant bag (13) is made of water-absorbing silica gel particles wrapped in non-woven fabric.

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