Well lid device integrating ventilation, explosion prevention and deodorization

Abstract

The application provides a well lid device integrating ventilation, explosion prevention and deodorization, which comprises a well ring and a well lid hingedly connected at one end, and one or more ventilation and explosion prevention assemblies are arranged on the well lid, wherein the ventilation and explosion prevention assembly comprises a lower extension screw rod with a through hole, a conical cover arranged at the lower end of the lower extension screw rod, a mesh ring arranged at the lower end of the conical cover, a plurality of hollow mesh holes arranged on the sidewall of the mesh ring, and a concave collection bottom cover arranged at the inner lower end of the mesh ring; the upper end of the through hole is communicated with the outside, and the lower end of the through hole is communicated with the mesh ring, so that the ventilation, exhaust and explosion prevention problems of the municipal well lid are solved.

Description

Technical Field

[0001] This utility model relates to the field of municipal drainage, and in particular to a manhole cover device that integrates ventilation, explosion protection, and deodorization. Background Technology

[0002] Wastewater inspection wells are confined spaces where sewage and microbial reactions can produce large amounts of toxic, harmful, flammable, and explosive gases, causing numerous poisoning and explosion accidents. They are a major killer in the municipal wastewater industry. To address this issue, many countries now incorporate vents in their manhole covers. These vents serve several purposes: first, they allow for gas exchange with the outside environment, reducing the concentration of toxic, harmful, flammable, and explosive gases inside the manhole; second, they help balance the air pressure inside and outside the manhole, facilitating the smooth flow of sewage; and third, they facilitate drainage, reducing water accumulation on roads.

[0003] Although some manhole covers in China are equipped with ventilation holes, which reduces the dangers of confined spaces, there are still shortcomings: the ventilation holes have no interception measures, and fire sources such as firecrackers and cigarette butts can easily cause explosions when they fall in, resulting in damage to public property and casualties, as reported in many news articles. Utility Model Content

[0004] This utility model provides a manhole cover device that integrates ventilation, explosion prevention, and deodorization, solving the problems of ventilation, exhaust, and explosion prevention of municipal manhole covers.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a manhole cover device integrating ventilation, explosion-proof and deodorization, including a manhole ring and a manhole cover that are hinged to each other at one end. The manhole cover is provided with one or more ventilation and explosion-proof components. The ventilation and explosion-proof components include a downward extending screw with a through hole. The lower end of the downward extending screw is provided with a conical cover. The lower end of the conical cover is provided with a mesh ring. The side wall of the mesh ring is provided with multiple hollow mesh holes. The lower end of the mesh ring is provided with a recessed collection bottom cover. The upper end of the through hole is connected to the outside, and the lower end of the through hole is connected to the inside of the mesh ring.

[0006] In the preferred embodiment, the outer wall of the lower extension screw is fitted with a threaded locking nut, and the upper end of the locking nut abuts against the lower end face of the manhole cover.

[0007] In the preferred embodiment, the upper end of the downward extending screw is provided with a mushroom cap that protrudes from the upper surface of the manhole cover.

[0008] In the preferred embodiment, the mushroom cap has a convex positioning structure and a covering edge, the manhole cover has a sinking groove, the convex positioning structure is inserted into the sinking groove, and the covering edge abuts against the upper surface of the manhole cover.

[0009] In the preferred embodiment, the outer edge of the upper part of the mushroom cap is also provided with a chamfered structure.

[0010] In the preferred embodiment, the through hole is a tapered hole structure with a smaller inner diameter at the top and a larger inner diameter at the bottom.

[0011] In the preferred embodiment, the upper end of the conical cover is provided with a threaded hole, which is threadedly connected to the outer wall of the lower extension screw.

[0012] In the preferred embodiment, the inner edge of the upper end of the mesh ring is provided with a threaded structure and is threadedly connected to the outer edge of the lower end of the conical cover.

[0013] In a preferred embodiment, one end of the collecting base cover is hinged to the lower end of the mesh ring, and the other end of the collecting base cover is provided with a magnet block that is attracted to the lower end of the mesh ring. A torsion spring structure is provided at the hinge pivot so that one end of the collecting base cover can be opened downwards and reset upwards.

[0014] In the preferred embodiment, one end of the collecting bottom cover is provided with a hinge ear, one side of the lower end of the mesh ring is provided with a hinge seat, and a support shaft is also provided. The support shaft passes through the hinge seat and the hinge ear and is rotatably sleeved with the hinge seat and the hinge ear. Both ends of the support shaft are provided with threaded end lock screws. The end lock screws are provided with stepped parts, which abut against the end of the support shaft. A torsion spring is sleeved on the outside of the support shaft, and both ends of the torsion spring are respectively inserted into the torsion spring insertion holes of the hinge ear of the hinge seat.

[0015] The beneficial effects of this utility model are as follows: it has ventilation and drainage effects, which can facilitate gas exchange, balance air pressure and prevent water accumulation, and avoid the accumulation of large amounts of odor and biogas, which could cause safety hazards; it has the function of intercepting fire sources, with the bottom cover intercepting and extinguishing fire sources to prevent explosions inside the well; it adopts a modular design, which is easy to disassemble and assemble, easy to clean, and can replace damaged parts, and can be applied to existing manhole covers. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a top-view structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the present invention from a lower perspective.

[0019] Figure 3 This is an exploded view of the ventilation and explosion-proof components.

[0020] Figure 4 This is a cross-sectional view of the optimized mushroom cap structure.

[0021] Figure 5 It is a collection of optimized structural diagrams of the bottom cover.

[0022] Figure 6 This is a cross-sectional view of the hinged part of the base cover.

[0023] In the diagram: 1. Manhole ring; 2. Manhole cover; 201. Sinking trough; 3. Ventilation and explosion-proof assembly; 4. Mushroom cap; 401. Lower convex positioning structure; 402. Cover edge; 403. Chamfered structure; 5. Lower extension screw; 501. Through hole; 6. Locking nut; 7. Conical cover; 8. Mesh ring; 801. Hinge seat; 9. Collection bottom cover; 901. Hinge ear; 902. Magnet block; 10. Torsion spring; 1001. Torsion spring insertion hole; 11. Support shaft; 12. End lock screw; 1201. Step section. Detailed Implementation

[0024] like Figure 1-6 In this invention, a manhole cover device integrating ventilation, explosion-proof, and deodorization is disclosed. It includes a manhole ring 1 and a manhole cover 2 that are hinged to each other at one end. The manhole cover 2 is provided with one or more ventilation and explosion-proof components 3. The ventilation and explosion-proof components 3 include a downward extending screw 5 with a through hole 501. The lower end of the downward extending screw 5 is provided with a conical cover 7. The lower end of the conical cover 7 is provided with a mesh ring 8. The side wall of the mesh ring 8 is provided with multiple hollow mesh holes. The lower end of the mesh ring 8 is provided with a recessed collection bottom cover 9. The upper end of the through hole 501 is connected to the outside, and the lower end of the through hole 501 is connected to the inside of the mesh ring 8.

[0025] The through hole 501 is open at both ends, and connects the underground and the outside through the mesh of the side wall of the mesh ring 8.

[0026] The through hole 501 can be used for ventilation, and the cone hood 7 can guide the odor upward through the through hole 501 for discharge.

[0027] The surface of the cone-shaped cover 7 can be coated with a deodorizing and moisture-proof coating to reduce odor.

[0028] When a cigarette butt or other burning object enters the through hole 501, it will fall into the collection bottom cover 9, preventing it from falling directly to the bottom of the well and causing a biogas explosion. Because the collection bottom cover 9 has good ventilation to the outside, the biogas concentration is low. Furthermore, due to water truck operations and rainfall, the recessed structure of the collection bottom cover 9 usually accumulates water, extinguishing cigarette butts and other burning objects, thus reducing safety hazards.

[0029] In the preferred embodiment, the outer wall of the lower extension screw 5 is fitted with a threaded locking nut 6, and the upper end of the locking nut 6 abuts against the lower end face of the well cover 2.

[0030] After the lower extension screw 5 is inserted, the locking nut 6 is rotated and pressed against the lower end face of the manhole cover 2 to lock the ventilation and explosion-proof component 3, preventing the ventilation and explosion-proof component 3 from moving up and down when the vehicle tires run over the manhole cover 2 or when the water flows back in during flooding.

[0031] In the preferred embodiment, the upper end of the downward extending screw 5 is provided with a mushroom cap 4 that protrudes from the upper surface of the well cover 2.

[0032] The lower extension screw 5 and the mushroom cap 4 are welded together. During installation, a through hole is pre-drilled on the manhole cover 2. The lower extension screw 5 is inserted into the through hole, and the mushroom cap 4 remains above the manhole cover 2. The upper end of the through hole 501 passes through the mushroom cap 4. The mushroom cap 4 forms a protrusion above the manhole cover 2 with a height greater than that of the cross friction structure. Therefore, the upper end of the through hole 501 is raised. When cleaning the road or during windy conditions, small stones, small debris, and low-level water will not easily enter the mesh ring 8, reducing the cleaning frequency of the mesh ring 8.

[0033] In the preferred embodiment, the mushroom cap 4 is provided with a downward convex positioning structure 401 and a covering edge 402, the manhole cover 2 is provided with a sinking groove 201, the downward convex positioning structure 401 is inserted into the sinking groove 201, and the covering edge 402 abuts against the upper surface of the manhole cover 2.

[0034] The convex positioning structure 401 is inserted into the sinking groove 201 to prevent the lower extension screw 5 from sliding horizontally due to pressure from tires, etc., which would cause the lower extension screw 5 to bend or break due to lateral shear force.

[0035] Cover the butt joint with 402 to prevent dust and gravel from entering.

[0036] In the preferred embodiment, the upper outer edge of the mushroom cap 4 is also provided with a chamfered structure 403.

[0037] Avoid sharp structures that could puncture tires or injure pedestrians.

[0038] In the preferred embodiment, the through hole 501 is a tapered hole structure with a smaller inner diameter at the top and a larger inner diameter at the bottom.

[0039] When debris enters the upper port of the through hole 501, it can pass through more easily due to the increased lower inner diameter, thus avoiding blockage of the through hole 501.

[0040] In the preferred embodiment, the upper end of the conical cover 7 is provided with a threaded hole, which is threadedly connected to the outer wall of the lower extension screw 5.

[0041] In the preferred embodiment, the inner edge of the upper end of the mesh ring 8 is provided with a threaded structure and is threadedly connected to the outer edge of the lower end of the conical cover 7.

[0042] The modular structure not only simplifies installation but also reduces the machining difficulty of individual parts, saving costs. Furthermore, it facilitates maintenance and replacement in case of damage to a single part.

[0043] Due to heavy rain, rainwater carries a large amount of dust, mud, and garbage into the mesh ring 8 through the through hole 501. If the mesh ring 8 and the collection bottom cover 9 adopt an integrated fixed structure, the mesh of the mesh ring 8 may be blocked by strip-shaped or sheet-shaped garbage, causing the through hole 501 to fail.

[0044] In a preferred embodiment, one end of the collecting base cover 9 is hinged to the lower end of the mesh ring 8, and the other end of the collecting base cover 9 is provided with a magnet 902, which is attracted to the lower end of the mesh ring 8. A torsion spring structure is provided at the hinge shaft so that one end of the collecting base cover 9 can be opened downwards and reset upwards.

[0045] In the preferred embodiment, the bottom cover 9 is provided with a hinge ear 901 at one end, the mesh ring 8 is provided with a hinge seat 801 on one side of the lower end, and a support shaft 11 is also provided. The support shaft 11 passes through the hinge seat 801 and the hinge ear 901 and is rotatably sleeved with the hinge seat 801 and the hinge ear 901. The two ends of the support shaft 11 are provided with threaded end lock screws 12. The end lock screws 12 are provided with stepped portions 1201. The stepped portions 1201 abut against the ends of the support shaft 11. A torsion spring 10 is sleeved on the outside of the support shaft 11. The two ends of the torsion spring 10 are respectively inserted into the torsion spring insertion holes 1001 of the hinge ears 901 of the hinge seat 801.

[0046] The bottom cover 9 can be designed as an arc-shaped recessed structure.

[0047] A magnetic strip is embedded at one end of the collecting base cover 9, and the lower end of the mesh ring 8, where it contacts the magnetic strip, is made of steel and coated with an anti-rust paint layer.

[0048] Under the restoring force of the torsion spring 10, the collection bottom cover 9 is fastened to the lower end of the mesh ring 8. When more than a day's worth of rainwater rushes in, the pressure on the collection bottom cover 9 gradually increases. When the pressure exceeds the combined force of the torsion spring holding force and the magnetic attraction force, the non-hinged end of the collection bottom cover 9 opens downwards, dumping the accumulated material and preventing the drainage function from failing.

[0049] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A manhole cover device integrating ventilation, explosion-proof, and deodorization, characterized in that: It includes a manhole ring (1) and a manhole cover (2) that are hinged to each other at one end. The manhole cover (2) is provided with one or more ventilation and explosion-proof components (3). The ventilation and explosion-proof components (3) include a downward extension screw (5) with a through hole (501). The lower end of the downward extension screw (5) is provided with a conical cover (7). The lower end of the conical cover (7) is provided with a mesh ring (8). The side wall of the mesh ring (8) is provided with multiple hollow mesh holes. The lower end of the mesh ring (8) is provided with a recessed collection bottom cover (9). The upper end of the through hole (501) is connected to the outside, and the lower end of the through hole (501) is connected to the inside of the mesh ring (8).

2. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 1, characterized in that: The outer wall of the lower extension screw (5) is fitted with a threaded locking nut (6), and the upper end of the locking nut (6) abuts against the lower end face of the well cover (2).

3. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 1, characterized in that: The upper end of the downward extension screw (5) is provided with a mushroom cap (4) that protrudes from the upper surface of the well cover (2).

4. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 3, characterized in that: The mushroom cap (4) is provided with a convex positioning structure (401) and a covering edge (402). The manhole cover (2) is provided with a sinking groove (201). The convex positioning structure (401) is inserted into the sinking groove (201), and the covering edge (402) abuts against the upper surface of the manhole cover (2).

5. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 3, characterized in that: The mushroom cap (4) also has a chamfered structure (403) on the outer edge of the upper end.

6. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 1, characterized in that: The through hole (501) is a tapered hole structure with a smaller inner diameter at the top and a larger inner diameter at the bottom.

7. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 1, characterized in that: The upper end of the conical cover (7) is provided with a threaded hole and is threadedly connected to the outer wall of the lower extension screw (5).

8. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 1, characterized in that: The inner edge of the upper end of the mesh ring (8) is provided with a threaded structure and is threadedly connected to the outer edge of the lower end of the conical cover (7).

9. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 1, characterized in that: One end of the collecting bottom cover (9) is hinged to the lower end of the mesh ring (8), and the other end of the collecting bottom cover (9) is provided with a magnet (902). The magnet (902) is attracted to the lower end of the mesh ring (8). A torsion spring structure is provided at the hinge shaft so that one end of the collecting bottom cover (9) can be opened downward and reset upward.

10. The manhole cover device integrating ventilation, explosion-proof, and deodorization as described in claim 9, characterized in that: The bottom cover (9) is provided with a hinge ear (901) at one end, and a hinge seat (801) is provided on one side of the lower end of the mesh ring (8). A support shaft (11) is also provided. The support shaft (11) passes through the hinge seat (801) and the hinge ear (901) and is rotatably sleeved with the hinge seat (801) and the hinge ear (901). The two ends of the support shaft (11) are provided with threaded end lock screws (12). The end lock screws (12) are provided with a stepped part (1201). The stepped part (1201) abuts against the end of the support shaft (11). A torsion spring (10) is sleeved on the outside of the support shaft (11). The two ends of the torsion spring (10) are respectively inserted into the torsion spring insertion holes (1001) of the hinge ear (901) of the hinge seat (801).

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