Stainless steel water tank overhauling manhole mechanism

By using a built-in folding airbag and a sealing mechanism with a cover in the stainless steel water tank maintenance manhole, the problem of corrosion of the sealing ring and flange was solved, resulting in better sealing performance and cost reduction.

CN224589836UActive Publication Date: 2026-08-04JIANGSU FUKESI ENVIRONMENTAL PROTECTION EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU FUKESI ENVIRONMENTAL PROTECTION EQUIP CO LTD
Filing Date
2025-09-09
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

The sealing rings, bolts, and flanges of the maintenance manhole mechanism of stainless steel water tanks are prone to corrosion, which leads to a decrease in sealing performance, an increase in cost, and severe rainwater erosion.

Method used

It employs a built-in folding airbag and a sealing mechanism with an added cover. The airbag expands and fills the built-in groove, replacing the double-layer material for sealing. Combined with a protective glass cover and a cover plate, it provides waterproofing and oxygen isolation.

Benefits of technology

It improves the overall sealing performance of the manhole cover, reduces the impact of rainwater erosion, lowers costs, avoids corrosion of sealing rings, bolts and flanges, and enhances the sealing effect.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224589836U_ABST
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Abstract

This utility model relates to the field of stainless steel water tank technology, specifically to a stainless steel water tank maintenance manhole mechanism, comprising: a stainless steel water tank opening, a cover sleeve provided at the fixing point of the stainless steel water tank opening, an internal groove formed on the inner side of the cover sleeve, a manhole cover installed at the threaded part of the stainless steel water tank opening, and a sealing mechanism provided at the fixing point of the manhole cover; the beneficial effects are: the protective glass cover and the cover plate as a whole cover the manhole cover, the cover sleeve and the stainless steel water tank opening, providing waterproof coverage; the built-in folding airbag and the additional cover isolate oxygen through the manhole cover, the cover sleeve and the stainless steel water tank opening, which can seal the stainless steel water tank manhole cover; the built-in folding airbag and the additional cover replace the sealing ring, bolts and flanges; the manhole cover, the cover sleeve and the stainless steel water tank opening prevent the built-in folding airbag and the additional cover from contacting oxygen and water vapor, preventing them from entering the interior of the manhole cover, the cover sleeve and the stainless steel water tank opening, thus playing a role in corrosion prevention and loosening, and improving the overall sealing performance of the manhole cover.
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Description

Technical Field

[0001] This utility model relates to the field of stainless steel water tanks, specifically a manhole mechanism for the maintenance of stainless steel water tanks. Background Technology

[0002] Stainless steel water tank inspection manholes are devices used to facilitate workers' access to the inside of water tanks for inspection, cleaning, and maintenance. They generally consist of a manhole cover, sealing ring, bolts, flanges, etc., and are usually made of stainless steel, such as SUS304 or 316L, which have good corrosion resistance and strength. They come in various shapes, such as round and square, with a common diameter of 600mm. Some manhole covers are made of glass to facilitate observation of the inside of the water tank.

[0003] Stainless steel water tanks on the market are sealed with manhole covers. The sealing rings, bolts and flanges are in constant contact with oxygen and water vapor, which can easily lead to corrosion and loosening, affecting the overall sealing performance of the manhole cover. The outside of the manhole cover is easily affected by rainwater. Although double-layer materials such as SUS304 and 316L are used, rainwater erosion is severe, resulting in excessively high costs. Utility Model Content

[0004] The purpose of this utility model is to provide a stainless steel water tank maintenance manhole mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel water tank maintenance manhole mechanism, comprising: a stainless steel water tank hole, a cover sleeve provided at the fixing point of the stainless steel water tank hole, an internal groove provided on the inner side of the cover sleeve, a manhole cover installed at the threaded part of the stainless steel water tank hole, a sealing mechanism provided at the fixing point of the manhole cover, and an additional cover installed at the covering part of the sealing mechanism.

[0006] Preferably, the manhole cover is threadedly fastened to the stainless steel water tank hole and the cover sleeve.

[0007] Preferably, the sealing mechanism and the mounting cover cover the inside of the built-in groove through a manhole cover.

[0008] Preferably, the sealing mechanism includes a hollow groove formed at the top of the manhole cover, a fixed part on the hollow groove is connected to a built-in folding airbag, and a connecting part on the built-in folding airbag is provided with an inflation end.

[0009] Preferably, the built-in folding airbag and the added cover are inflated inside the built-in groove via the inflation end.

[0010] Preferably, the sealing mechanism further includes a protective glass cover covering the mounting cover, and a cover plate is provided at the fixing point of the protective glass cover.

[0011] Preferably, the cover plate covers the mounting cap and the inflation end by a protective glass cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The stainless steel water tank maintenance manhole mechanism proposed in this utility model has a manhole cover that is completely sealed on the cover sleeve and the stainless steel water tank hole. The built-in folding airbag on the hollow groove is inflated through the inflation end. After the built-in folding airbag expands, it fills the inside of the built-in groove. The additional cover on the built-in folding airbag expands and rises and falls into the built-in groove. The built-in folding airbag and the additional cover expand and seal the built-in groove, the manhole cover, the cover sleeve and the stainless steel water tank hole. This can seal the cover sleeve and the stainless steel water tank hole, replacing the double-layer sealing of materials such as SUS304 and 316L. Rainwater erosion can enter the cover sleeve and the stainless steel water tank hole, reducing costs.

[0013] The protective glass cover and cover plate completely cover the manhole cover, cover sleeve, and stainless steel water tank opening for waterproofing. The built-in folding airbag and additional cover isolate oxygen through the manhole cover, cover sleeve, and stainless steel water tank opening, and can seal the stainless steel water tank manhole cover. The built-in folding airbag and additional cover replace the sealing ring, bolts, and flanges. The manhole cover, cover sleeve, and stainless steel water tank opening prevent the built-in folding airbag and additional cover from contacting oxygen and water vapor, preventing them from entering the interior of the manhole cover, cover sleeve, and stainless steel water tank opening, thus playing a role in corrosion prevention and ventilation, and improving the overall sealing performance of the manhole cover. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the sealing mechanism of this utility model; Figure 3 This is a schematic diagram of the structure of the protective glass cover of this utility model.

[0015] In the diagram: 1. Stainless steel water tank opening; 2. Cover sleeve; 3. Internal groove; 4. Manhole cover; 5. Sealing mechanism; 6. Additional cover; 7. Internal folding airbag; 8. Hollow groove; 9. Inflation end; 10. Protective glass cover; 11. Cover plate. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example 1 Please see Figures 1-3 This utility model provides a technical solution: a stainless steel water tank maintenance manhole mechanism, including: a stainless steel water tank hole 1, a cover 2 provided at the fixing point on the stainless steel water tank hole 1, an internal groove 3 opened on the inner side of the cover 2, a manhole cover 4 installed at the threaded part on the stainless steel water tank hole 1, a sealing mechanism 5 provided at the fixing point on the manhole cover 4, and an additional cover 6 installed at the covering part on the sealing mechanism 5.

[0018] The sealing mechanism 5 and the additional cover 6 are installed as a whole on the stainless steel water tank hole 1 and the cover sleeve 2 through the manhole cover 4. The manhole cover 4 is threadedly fastened to the stainless steel water tank hole 1, and the sealing mechanism 5 and the additional cover 6 fit together and cover the built-in groove 3.

[0019] The manhole cover 4 is threadedly fastened to the stainless steel water tank hole 1 and the cover sleeve 2. The manhole cover 4 covers the cover sleeve 2 through the stainless steel water tank hole 1, and the manhole cover 4 is completely sealed on the cover sleeve 2 and the stainless steel water tank hole 1.

[0020] The sealing mechanism 5 and the additional cover 6 cover the inside of the built-in groove 3 through the manhole cover 4. When the manhole cover 4 is completely closed on the cover sleeve 2 and the stainless steel water tank hole 1, the sealing mechanism 5 and the additional cover 6 fill the inside of the built-in groove 3. The additional cover 6 is slidably installed inside the built-in groove 3.

[0021] Example 2 Based on Embodiment 1, the sealing mechanism 5 includes a hollow groove 8 opened at the top of the manhole cover 4, a built-in folding airbag 7 connected to a fixed part on the hollow groove 8, and an inflation end 9 provided at the connecting part on the built-in folding airbag 7. The hollow groove 8 is opened at the top of the manhole cover 4, and the built-in folding airbag 7 is fixedly connected inside the hollow groove 8. The built-in folding airbag 7 on the hollow groove 8 is inflated through the inflation end 9.

[0022] The built-in folding airbag 7 and the additional cover 6 are inflated and expanded inside the built-in groove 3 through the inflation end 9. When the manhole cover 4 covers the cover sleeve 2 through the stainless steel water tank hole 1, the manhole cover 4 is completely sealed on the cover sleeve 2 and the stainless steel water tank hole 1. The built-in folding airbag 7 on the hollow groove 8 is inflated through the inflation end 9. After the built-in folding airbag 7 expands, it fills the inside of the built-in groove 3. The additional cover 6 on the built-in folding airbag 7 expands and rises and falls to the built-in groove 3. The built-in folding airbag 7 and the additional cover 6 are inflated and expanded to seal the built-in groove 3, the manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1. This can seal the cover sleeve 2 and the stainless steel water tank hole 1, replacing double-layer sealing with materials such as SUS304 and 316L. Rainwater erosion can enter the cover sleeve 2 and the stainless steel water tank hole 1, reducing costs.

[0023] Example 3 Based on Embodiment 2, the sealing mechanism 5 also includes a protective glass cover 10 covering the mounting cover 6. A cover plate 11 is provided at the fixing point on the protective glass cover 10, and the cover plate 11 is fixedly connected to the protective glass cover 10. The protective glass cover 10 and the cover plate 11 cover the sealing mechanism 5 and the mounting cover 6.

[0024] The cover plate 11 covers the additional cover 6 and the inflation end 9 through the protective glass cover 10. When the additional cover 6 on the built-in folding airbag 7 expands and rises to the built-in groove 3, the built-in folding airbag 7 and the additional cover 6 inflate and seal the built-in groove 3 and the manhole cover 4. The protective glass cover 10 and the cover plate 11 cover the manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1 for waterproofing. The built-in folding airbag 7 and the additional cover 6 isolate oxygen through the manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1, which can seal the stainless steel water tank manhole cover 4. The built-in folding airbag 7 and the additional cover 6 replace the sealing ring, bolt and flange. The manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1 prevent the built-in folding airbag 7 and the additional cover 6 from contacting oxygen and water vapor, prevent them from entering the interior of the manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1, play a role in corrosion prevention and loosening, and improve the overall sealing performance of the manhole cover 4.

[0025] In use, the manhole cover 4 is completely enclosed on the cover sleeve 2 and the stainless steel water tank hole 1. The built-in folding airbag 7 on the hollow groove 8 is inflated through the inflation end 9. After the built-in folding airbag 7 expands, it fills the inside of the built-in groove 3. The additional cover 6 on the built-in folding airbag 7 expands and rises and falls to the built-in groove 3. The built-in folding airbag 7 and the additional cover 6 expand and seal the built-in groove 3, the manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1, which can seal the cover sleeve 2 and the stainless steel water tank hole 1. The protective glass cover 10 and the cover plate 11 completely cover the manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1 for waterproofing. The built-in folding airbag 7 and the additional cover 6 isolate oxygen through the manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1, which can seal the stainless steel water tank manhole cover 4. The built-in folding airbag 7 and the additional cover 6 replace the sealing ring, bolt and flange. The manhole cover 4, the cover sleeve 2 and the stainless steel water tank hole 1 prevent the built-in folding airbag 7 and the additional cover 6 from contacting oxygen and water vapor.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel water tank maintenance manhole mechanism, characterized in that: The stainless steel water tank maintenance manhole mechanism includes: a stainless steel water tank hole (1), a cover (2) is provided at the fixed part of the stainless steel water tank hole (1), an internal groove (3) is provided on the inner side of the cover (2), a manhole cover (4) is installed at the threaded part of the stainless steel water tank hole (1), a sealing mechanism (5) is provided at the fixed part of the manhole cover (4), and an additional cover (6) is installed at the covering part of the sealing mechanism (5).

2. The stainless steel water tank maintenance manhole mechanism according to claim 1, characterized in that: The manhole cover (4) is threadedly fastened to the stainless steel water tank hole (1) and the cover sleeve (2).

3. The stainless steel water tank maintenance manhole mechanism according to claim 1, characterized in that: The sealing mechanism (5) and the mounting cover (6) cover the inside of the built-in groove (3) through the manhole cover (4).

4. The stainless steel water tank maintenance manhole mechanism according to claim 1, characterized in that: The sealing mechanism (5) includes a hollow groove (8) opened at the top of the manhole cover (4), a built-in folding airbag (7) is connected to the fixed part on the hollow groove (8), and an inflation end (9) is provided at the connecting part on the built-in folding airbag (7).

5. The stainless steel water tank maintenance manhole mechanism according to claim 4, characterized in that: The built-in folding airbag (7) and the added cover (6) are inflated through the inflation end (9) inside the built-in groove (3).

6. The stainless steel water tank maintenance manhole mechanism according to claim 5, characterized in that: The sealing mechanism (5) also includes a protective glass cover (10) covering the mounting cover (6), and a cover plate (11) is provided at the fixing point on the protective glass cover (10).

7. A stainless steel water tank maintenance manhole mechanism according to claim 6, characterized in that: The cover plate (11) covers the mounting cover (6) and the inflation end (9) through a protective glass cover (10).