Odor leakage prevention structure for manhole of sewage pool

Abstract

The utility model discloses a sewage pool manhole odor leakage prevention structure which comprises a cover body, a fixed guide rail is arranged at the bottom of the cover body, a slidable sliding support is installed in the guide rail, a push plate is arranged at the end, close to the outer side, of the sliding support, and a rubber strip bonded with the cover body is installed on the outer side of the push plate. A pushing and pressing device capable of pushing the sliding support outwards to enable the rubber strip to make contact with the hole opening in a sealed mode is arranged in the cover body. According to the odor leakage prevention structure for the manhole of the sewage pool, the sliding support is driven to expand outwards or contract inwards by pushing the pressing device, in the expansion state, the push plate pushes the rubber strip to be closely attached to the manhole opening far away, meanwhile, the friction force is increased, the cover body is stably installed, and the sealing purpose is achieved; and convenience is provided for opening the orifice for maintenance.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, specifically a structure for preventing odor leakage from a maintenance hole in a sewage tank. Background Technology

[0002] Leachate and flushing wastewater generated during waste disposal are usually temporarily stored or treated in sewage ponds. These wastewaters contain high concentrations of pollutants such as organic matter, heavy metals, and pathogenic microorganisms. Direct discharge of such wastewater would seriously pollute the soil and water bodies. Therefore, sewage ponds are an indispensable part of the waste disposal system, used to collect, store, and preliminarily treat the wastewater to prevent environmental pollution.

[0003] Wastewater generated during waste disposal contains high concentrations of pollutants such as organic matter, heavy metals, and pathogenic microorganisms, causing severe air pollution. The foul odor from the wastewater can permeate the air. Therefore, wastewater tanks are usually designed to be sealed, with multiple inspection holes and manholes. However, the sealing is relatively rudimentary, typically achieved through manhole covers. Odors from the wastewater tank can still escape through the gaps, affecting the surrounding environment. This application is made to address the problem of poor sealing of inspection holes and manholes, which leads to odor dispersion. Utility Model Content

[0004] The purpose of this utility model is to provide a structure for preventing odor leakage from the inspection hole of a sewage tank, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A structure for preventing odor leakage from a sewage tank inspection hole includes a cover. The bottom of the cover is provided with a fixed guide rail. A sliding bracket is installed inside the guide rail. A push plate is provided at one end of the sliding bracket near the outer side. A rubber strip that is bonded to the cover is installed on the outer side of the push plate. An advancing and pressing device is provided inside the cover to push the sliding bracket outward so that the rubber strip contacts and seals the opening.

[0007] As a further embodiment of this utility model: the push-pressing device includes a fixed contact, a sliding contact, a central shaft, a pressing end, and an assembly cover. The assembly cover is installed on the top of the cover body by bolts. The central shaft passes through the assembly cover. The pressing end is installed at the top of the central shaft, the fixed contact is installed at the bottom of the central shaft, and the sliding contact that can slide up and down is installed on the outside of the central shaft.

[0008] As a further improvement of this utility model: the outer sides of both the fixed contact and the sliding contact are beveled, and the side of the sliding bracket near the fixed contact is also beveled, so that the fixed contact can push the sliding bracket outward through the beveled surface.

[0009] As a further improvement of this utility model: the fixed contact has a slot inside, and the bottom of the sliding contact is provided with a limiting block that corresponds to the position of the slot and can be inserted into the slot. After the sliding bracket slides past the top of the fixed contact, it contacts the limiting block.

[0010] As a further improvement of this utility model: a contact separation spring is provided between the fixed contact and the sliding contact, and a limiting ring is provided on the outer side of the central shaft to limit the upward movement distance of the sliding contact.

[0011] As a further improvement of this utility model, a reset spring is provided between the pressing end and the assembly cover.

[0012] As a further improvement of this utility model: the sliding bracket is provided with a positioning groove inside, and a leaf spring that penetrates the positioning groove inside the sliding bracket is installed inside the guide rail.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The odor-proof structure of the inspection hole for the sewage tank expands or contracts outwards by pushing and pressing the sliding bracket. In the expanded state, the push plate pushes the rubber strip to fit more closely with the opening, while the friction increases, making the cover installation more secure and achieving the purpose of sealing. In the contracted state, the friction decreases, making it easier to open the opening for maintenance. Attached Figure Description

[0015] Figure 1 A schematic diagram of a structure for preventing odor leakage from a sewage tank inspection hole;

[0016] Figure 2 A top view of a structure for preventing odor leakage from a sewage tank inspection hole;

[0017] Figure 3 An exploded view of a structure for preventing odor leakage from a sewage tank inspection hole;

[0018] Figure 4 A schematic diagram of the push-press device in a structure for preventing odor leakage from a sewage tank inspection hole;

[0019] Figure 5 A top view of the sliding support structure in a sewage tank inspection hole odor-proof structure;

[0020] Figure 6 This is a schematic diagram of a circular cover structure for preventing odor leakage from a sewage tank inspection hole.

[0021] In the diagram: 1. Cover; 2. Guide rail; 3. Sliding bracket; 4. Push plate; 5. Rubber strip; 6. Leaf spring; 7. Assembly cover; 8. Return spring; 9. Fixed contact; 10. Sliding contact; 11. Central shaft; 12. Pressing end; 13. Limiting ring; 14. Limiting block; 15. Slot; 16. Contact separation spring. Detailed Implementation

[0022] Please see Figures 1-6 In this embodiment of the utility model, a structure for preventing odor leakage from a sewage tank inspection hole includes a cover 1. A fixed guide rail 2 is provided at the bottom of the cover 1. A slidable sliding bracket 3 is installed inside the guide rail 2. A push plate 4 is provided at one end of the sliding bracket 3 near the outer side. A rubber strip 5, which is bonded to the cover 1, is installed on the outer side of the push plate 4. A push-pressing device is provided inside the cover 1 to push the sliding bracket 3 outward so that the rubber strip 5 contacts and seals the hole. Originally, the simple covering with a manhole cover or other cover had poor sealing effect and odor was easy to leak. In order to improve its sealing performance, this application sets up a push-pressing device. The push-pressing device pushes the push plate 4 outward through the sliding bracket 3, so that the rubber strip 5 is further away from the hole and fits tightly, achieving a sealing effect. The rubber strip 5 has two parts, namely a semi-circular part and a skirt part. The semi-circular part is bonded to the push plate 4, and the skirt part is bonded to the cover 1. The skirt part has a certain amount of extra material to prevent the skirt part from detaching from the cover 1 during the movement of the push plate 4.

[0023] In a preferred embodiment, the push-pressing device includes a fixed contact 9, a sliding contact 10, a central shaft 11, a pressing end 12, and an assembly cover 7. The assembly cover 7 is bolted to the top of the cover body 1, and the central shaft 11 passes through the assembly cover 7. A pressing end 12 is installed at the top of the central shaft 11, a fixed contact 9 is installed at the bottom of the central shaft 11, and a sliding contact 10 that can slide up and down is installed on the outside of the central shaft 11. The assembly cover 7 is movably connected to the central shaft 11, allowing the central shaft 11 to slide vertically up and down. A slot 15 is provided inside the fixed contact 9, and a limiting block 14 corresponding to the position of the slot 15 and insertable into the slot 15 is provided at the bottom of the sliding contact 10. After the sliding bracket 3 slides past the top of the fixed contact 9, it contacts the limiting block 14. By pressing the pressing end 12 downward, the fixed contact 9 pushes the sliding bracket 3 outward to form a seal. When the sliding bracket 3 moves to the top of the fixed contact 9, the sliding bracket 3 abuts against the limiting block 14, and the sliding bracket 3 locks the fixed contact 9 to prevent retraction. 4. The sliding bracket 3 is locked to restrict retraction, so that the push plate 4 always maintains the sealing state between the rubber strip 5 and the orifice. When the pressing end 12 continues to press down, the sliding bracket 3 slides to the outside of the sliding contact 10 and the pressing end 12 is released. A return spring 8 is provided between the pressing end 12 and the assembly cover 7. The return spring 8 is reset through the central shaft 11. Under the action of the central shaft 11 reset and the action of the sliding bracket 3 on the sliding contact 10, the sliding contact 10 is in contact with the fixed contact 9. The limiting block 14 is inserted into the slot 15. The central shaft 11 continues to move upward, so that the sliding bracket 3 can transition from the sliding contact 10 to the fixed contact 9. At this time, the sliding bracket 3 is fully retracted, the push plate 4 loses the outward pushing force, and the cover 1 can be removed. The operation is simple and the replacement is convenient.

[0024] In a preferred embodiment, the outer sides of both the fixed contact 9 and the sliding contact 10 are beveled, and the side of the sliding bracket 3 closest to the fixed contact 9 is also beveled, so that the fixed contact 9 can push the sliding bracket 3 outward through the beveled surface.

[0025] In a preferred embodiment, a contact separation spring 16 is provided between the fixed contact 9 and the sliding contact 10, and a limiting ring 13 is provided on the outer side of the central shaft 11 to limit the upward movement distance of the sliding contact 10. The limiting ring 13 has two functions: first, it can limit the distance that the return spring 8 pushes the central shaft 11 upward; second, it can limit the distance that the sliding contact 10 moves upward. When the sliding bracket 3 moves to the outer side of the fixed contact 9, the contact separation spring 16 pushes the sliding contact 10 upward, causing the sliding contact 10 to separate from the fixed contact 9, and so on in a reciprocating manner.

[0026] In a preferred embodiment, the sliding bracket 3 is provided with a positioning groove inside, and a leaf spring 6 is installed inside the guide rail 2, which passes through the positioning groove inside the sliding bracket 3. The leaf spring 6 applies an inward thrust to the sliding bracket 3.

[0027] It should be noted that all the above embodiments belong to the same utility model concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0028] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A structure for preventing odor leakage from a sewage tank inspection hole, comprising a cover (1), characterized in that, The bottom of the cover (1) is provided with a fixed guide rail (2), and a sliding bracket (3) is installed inside the guide rail (2). A push plate (4) is provided at one end of the sliding bracket (3) near the outside. A rubber strip (5) that is bonded to the cover (1) is installed on the outside of the push plate (4). The inside of the cover (1) is provided with a push-pressing device that can push the sliding bracket (3) outward so that the rubber strip (5) contacts and seals the opening.

2. The odor-proof structure for the inspection hole of a sewage tank according to claim 1, characterized in that, The push-pressing device includes a fixed contact (9), a sliding contact (10), a central shaft (11), a pressing end (12), and an assembly cover (7). The assembly cover (7) is bolted to the top of the cover body (1). The central shaft (11) passes through the assembly cover (7). The pressing end (12) is installed at the top of the central shaft (11). The fixed contact (9) is installed at the bottom of the central shaft (11). The sliding contact (10) that can slide up and down is installed on the outside of the central shaft (11).

3. The odor-proof structure for the inspection hole of a sewage tank according to claim 2, characterized in that, The outer sides of both the fixed contact (9) and the sliding contact (10) are beveled. The side of the sliding bracket (3) near the fixed contact (9) is also beveled. The fixed contact (9) can push the sliding bracket (3) outward through the beveled surface.

4. The odor-proof structure for the inspection hole of a sewage tank according to claim 2, characterized in that, The fixed contact (9) has a slot (15) inside. The bottom of the sliding contact (10) is provided with a limiting block (14) that corresponds to the position of the slot (15) and can be inserted into the slot (15). The sliding bracket (3) slides past the top of the fixed contact (9) and contacts the limiting block (14).

5. The odor-proof structure for the inspection hole of a sewage tank according to claim 4, characterized in that, A contact separation spring (16) is provided between the fixed contact (9) and the sliding contact (10), and a limiting ring (13) is provided on the outside of the central shaft (11) to limit the upward travel distance of the sliding contact (10).

6. The odor-proof structure for the inspection hole of a sewage tank according to claim 2, characterized in that, A return spring (8) is provided between the pressing end (12) and the assembly cover (7).

7. A structure for preventing odor leakage from a sewage tank inspection hole according to any one of claims 1-6, characterized in that, The sliding bracket (3) has a positioning groove inside, and the guide rail (2) has a leaf spring (6) that penetrates the positioning groove inside the sliding bracket (3).

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