Explosion-proof device for sewage manhole cover

Abstract

The utility model discloses a sewage manhole cover explosion-proof device, including a roadbed, a shaft is opened on the top of the roadbed, a manhole cover body is placed on the top of the shaft, small manhole cover holes are opened on the left and right sides of the top of the manhole cover body, water-containing shells are bonded to the left and right sides of the bottom of the manhole cover body, ventilation net shells are fixedly connected to the tops of the opposite sides of the left and right water-containing shells, an activated carbon fiber net is placed in the inner cavity of the ventilation net shell, and a buffer mechanism is glued to the edge of the bottom of the manhole cover body. The utility model provides a sewage manhole cover explosion-proof device, which is light, low in cost, and easy to install. It can be directly installed on the sewage manhole cover that has been put into use, has strong applicability, does not affect other use functions of the manhole cover after installation, and can effectively avoid the occurrence of sewage well explosion incidents, can effectively guarantee the safe operation of the municipal sewage pipe network, and has high social and economic benefits.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage manhole covers, and in particular relates to an explosion-proof device for sewage manhole covers. Background Art

[0002] Sewage manhole cover is an important equipment used to cover the sewage pipe inspection wellhead and sewage wellhead. According to different materials, sewage manhole covers can be divided into cast iron, reinforced concrete, resin and other materials. Cast iron manhole covers are cheap, have strong load-bearing capacity and are widely used.

[0003] After searching, the announcement number is CN216766165U, and the name is a municipal engineering sewage manhole cover, which includes a manhole cover body and a base. Through research and analysis, it is found that although it is convenient to take and fix the manhole cover body, and at the same time it can prevent the high air pressure in the sewer from pushing the manhole cover out, if there is water on the ground, it will affect the viewing angle and cause danger to pedestrians. However, to a certain extent, the following defects still exist.

[0004] The above-mentioned sewage manhole covers do not have explosion-proof functions. In real life, we often hear about children throwing firecrackers into the small holes in the manhole covers, causing inspection wells to explode. There are generally small holes on the manhole covers, which also form a physical passage between the inside and outside of the well. Open flames enter the well and ignite combustible gases, causing explosions. Once an explosion occurs, it will cause serious loss of life and property, and bring huge challenges to the operation and maintenance safety of the pipeline. At the same time, it is impossible to adsorb and filter the odorous gases in the sewage well. The gas floating out of the manhole cover holes will pollute the external environment and cause a decline in air quality.

[0005] The above problems are manifested in that ordinary sewage manhole covers do not have explosion-proof functions. Open flames enter the well and ignite combustible gases, causing explosions, causing significant losses. It is impossible to adsorb and filter odorous gases, resulting in pollution of the external environment. Utility Model Content

[0006] The purpose of this utility model is to address the deficiencies of the existing technology and propose a sewage manhole cover explosion-proof device to solve the problem that the sewage well explodes when encountering an open flame due to the lack of explosion-proof function, and the odorous gas cannot be adsorbed and filtered, resulting in pollution of the outside air.

[0007] The technical purpose of this utility model is achieved through the following technical solutions:

[0008] A sewage manhole cover explosion-proof device includes a roadbed, a manhole is opened on the top of the roadbed, a manhole cover body is placed on the top of the manhole cover body, manhole cover holes are opened on the left and right sides of the top of the manhole cover body, water storage shells are bonded to the left and right sides of the bottom of the manhole cover body, and ventilation mesh shells are fixedly connected to the tops of the opposite sides of the left and right water storage shells, and an activated carbon fiber mesh is placed in the inner cavity of the ventilation mesh shell.

[0009] Preferably, a placement groove is provided at the top of the shaft, and a buffer mechanism is glued to the edge of the bottom of the manhole cover body.

[0010] Preferably, the buffer mechanism comprises a buffer damping pad, a wear-resistant base pad is glued to the bottom of the buffer damping pad, and the surfaces of the buffer damping pad and the wear-resistant base pad are coated with a corrosion-resistant coating.

[0011] Preferably, the inner wall of the shaft is fixedly connected to a concrete shaft wall, and the top of the shaft cover body is fixedly connected to an anti-slip bump.

[0012] Preferably, a strong adhesive layer is fixedly connected to both the left and right sides of the bottom of the manhole cover body, and the bottom of the strong adhesive layer is fixedly connected to the water container shell.

[0013] Preferably, ventilation openings are provided on the tops of the opposite sides of the left and right water-containing shells, and a ventilation filter is fixedly connected to the inner cavity of the ventilation opening.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This device is light, low-cost, and easy to install. It can be directly installed on the sewage manhole cover that has been put into use. It has strong applicability. After installation, it will not affect the other functions of the manhole cover, and can effectively avoid the occurrence of sewage well explosions. It can effectively ensure the safe operation of the municipal sewage pipe network, has high social and economic benefits, and can adsorb and filter the odorous gas floating out of the sewage well, purify the gas in the sewage well, so that it will not pollute the outside air after flowing to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric drawing of the structure of the utility model;

[0017] Figure 2 It is a bottom-up axonometric drawing of the structure of the present utility model;

[0018] Figure 3 This is a sectional axonometric view of the water container of the present invention;

[0019] Figure 4 This is a sectional isometric view of the buffer mechanism of the utility model;

[0020] Figure 5 For this utility model Figure 4 A magnified view of center.

[0021] In the above drawings: 1. Roadbed; 2. Anti-slip bumps; 3. Placement groove; 4. Manhole cover body; 5. Manhole cover hole; 6. Buffer mechanism; 7. Well shaft; 8. Concrete well wall; 9. Water storage shell; 10. Ventilation mesh shell; 11. Ventilation opening; 12. Activated carbon fiber mesh; 13. Strong adhesive layer; 14. Corrosion-resistant coating; 15. Wear-resistant bottom pad; 16. Buffer damping pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] As a preferred embodiment of the present invention, Figure 1-Figure 5 As shown, this embodiment provides a sewage manhole cover explosion-proof device, including a roadbed 1, a manhole 7 is opened on the top of the roadbed 1, a manhole cover body 4 is placed on the top of the manhole cover body 4, manhole cover holes 5 are opened on the left and right sides of the top of the manhole cover body 4, water holding shells 9 are bonded to the left and right sides of the bottom of the manhole cover body 4, and ventilation mesh shells 10 are fixedly connected to the tops of the opposite sides of the left and right water holding shells 9, and an activated carbon fiber net 12 is placed in the inner cavity of the ventilation mesh shell 10.

[0024] When the above embodiment is implemented, the water-containing shell 9 is attached to the inner side of the manhole cover body 4 through the strong adhesive layer 13, and is aligned with the small hole 5 of the manhole cover, and water is poured into the water-containing shell 9. The inside and outside of the sewage well are normally ventilated through the ventilation opening 11. The ventilation opening 11 can also serve as an overflow port for the water container. When open flames such as cigarette butts and firecrackers enter from the small hole 5 of the manhole cover, they will directly fall into the water-containing shell 9 filled with water. The open flame will be extinguished under the flame retardant effect of water, thereby avoiding falling into the well and igniting methane, hydrogen sulfide and other combustible gases, thereby achieving the purpose of explosion prevention. After installation, it will not affect other functions of the manhole cover and can effectively prevent the sewage well from exploding. The occurrence of explosion incidents can effectively guarantee the safe operation of municipal sewage pipe network and has high social and economic benefits. In addition, the water capacity of water shell 9 should not be too small. During the daily operation and maintenance inspection cycle of sewage well pipe network, the water volume in water shell 9 evaporates by not less than 50%. Each time the inspection personnel inspect, they should replenish water to ensure that the water volume in the water container can effectively extinguish the open flame that falls into it. In the process of ventilation inside and outside the sewage well, the activated carbon fiber mesh 12 in the ventilation mesh shell 10 can adsorb and filter the odorous gas floating out of the sewage well, purify the gas in the sewage well, and make it flow to the outside without polluting the outside air.

[0025] In some embodiments, as Figure 2 and Figure 5As shown, a placement groove 3 is opened at the top of the wellbore 7, and a buffer mechanism 6 is glued to the edge of the bottom of the manhole cover body 4. The buffer mechanism 6 includes a buffer damping pad 16, and a wear-resistant bottom pad 15 is glued to the bottom of the buffer damping pad 16. The surfaces of the buffer damping pad 16 and the wear-resistant bottom pad 15 are coated with a corrosion-resistant coating 14.

[0026] In this embodiment, during daily use, vehicles often run over the top of the manhole cover body 4, which will cause the manhole cover body 4 to vibrate frequently. Long-term vibration will cause separation between the water shell 9 and the strong rubber layer 13, causing the water shell 9 to fall off from the bottom of the manhole cover body 4. By setting up a buffer mechanism 6, the manhole cover body 4 can be buffered and vibration-reduced. After the vehicle runs over the manhole cover body 4, the impact force generated causes squeezing of the buffer damping pad 16. The buffer damping pad 16 can dissipate the transmitted impact energy through its own damping characteristics to achieve the purpose of vibration reduction. On the one hand, this can protect the manhole cover body 4, and on the other hand, reducing vibration can prevent the water shell 9 from falling off from the bottom of the manhole cover body 4. By setting up a wear-resistant bottom pad 15, the wear resistance of the buffer damping pad 16 can be increased, and the buffer damping pad 16 can be prevented from being damaged by long-term friction with the inner wall of the placement groove 3. By setting up a corrosion-resistant coating 14, the overall corrosion resistance of the buffer mechanism 6 can be enhanced, effectively extending the service life.

[0027] In some embodiments, as Figure 1 and Figure 3 As shown, the inner wall of the wellbore 7 is fixedly connected to the concrete well wall 8, the top of the well cover body 4 is fixedly connected to the anti-slip protrusion 2, the left and right sides of the bottom of the well cover body 4 are fixedly connected to the strong adhesive layer 13, the bottom of the strong adhesive layer 13 is fixedly connected to the water shell 9, and the tops of the opposite sides of the left and right water shells 9 are provided with ventilation openings 11, and the inner cavity of the ventilation opening 11 is fixedly connected to a ventilation filter.

[0028] This embodiment provides anti-skid protrusions 2 to increase the friction between an object and the surface of the manhole cover body 4, thereby preventing people from slipping after stepping on the manhole cover body 4 on rainy days. The water container 9 is installed on the surface of the manhole cover body 4 through the strong adhesive layer 13, which is more convenient and quick, and has a lower installation cost.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A sewage manhole cover explosion-proof device, comprising a roadbed (1), characterized in that: A shaft (7) is provided at the top of the roadbed (1), a shaft cover body (4) is placed at the top of the shaft (7), small shaft cover holes (5) are provided on the left and right sides of the top of the shaft cover body (4), water storage shells (9) are bonded to the left and right sides of the bottom of the shaft cover body (4), ventilation net shells (10) are fixedly connected to the tops of the opposite sides of the left and right water storage shells (9), and an activated carbon fiber net (12) is placed in the inner cavity of the ventilation net shell (10).

2. The sewage manhole cover explosion-proof device according to claim 1, characterized in that: A placement groove (3) is provided at the top of the shaft (7), and a buffer mechanism (6) is glued to the edge of the bottom of the manhole cover body (4).

3. The sewage manhole cover explosion-proof device according to claim 2, characterized in that: The buffer mechanism (6) comprises a buffer damping pad (16), a wear-resistant base pad (15) is glued to the bottom of the buffer damping pad (16), and the surfaces of the buffer damping pad (16) and the wear-resistant base pad (15) are coated with a corrosion-resistant coating (14).

4. The sewage manhole cover explosion-proof device according to claim 1, characterized in that: The inner wall of the shaft (7) is fixedly connected to a concrete shaft wall (8), and the top of the shaft cover body (4) is fixedly connected to an anti-slip protrusion (2).

5. The sewage manhole cover explosion-proof device according to claim 1, characterized in that: A strong adhesive layer (13) is fixedly connected to both left and right sides of the bottom of the manhole cover body (4), and the bottom of the strong adhesive layer (13) is fixedly connected to the water container shell (9).

6. The sewage manhole cover explosion-proof device according to claim 1, characterized in that: A ventilation opening (11) is provided at the top of the opposite side of the left and right water-containing shells (9), and a ventilation filter is fixedly connected to the inner cavity of the ventilation opening (11).

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