An outdoor anti-corrosion anti-freezing anti-sunlight bauxite film methane tank for anaerobic fermentation of manure

By incorporating an arc-shaped epoxy resin coating, drainage holes, and support structure in an outdoor, corrosion-resistant, freeze-resistant, and sun-resistant red mud membrane biogas digester for anaerobic fermentation of manure, the problem of water accumulation is solved, the service life is extended, and snow accumulation is prevented.

CN224548257UActive Publication Date: 2026-07-24HENAN ZONGHAI PLASTIC IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENAN ZONGHAI PLASTIC IND CO LTD
Filing Date
2025-07-10
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing outdoor anaerobic fermentation red mud membrane biogas digesters, which are corrosion-resistant, freeze-resistant, and sun-resistant, suffer from water accumulation due to rain and snow, which makes it difficult to drain. This causes the gas storage bag and the bottom of the biogas digester to be soaked for a long time, reducing their service life.

Method used

The system employs an arc-shaped epoxy resin coating, drainage holes, and support structure. The arc-shaped epoxy resin coating protects the red mud fermentation bag, while the drainage holes and pipes guide the drainage of accumulated water. Expansion joints are provided in the support structure to adapt to temperature changes and prevent snow accumulation.

Benefits of technology

It effectively drains accumulated water, protects the red clay fermentation bags from soaking, extends their service life, adapts to temperature changes, prevents snow accumulation, and reduces support corrosion.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of outdoor anti-corrosion anti-freezing anti-solar manure anaerobic fermentation red mud film methane tank, including pool wall body, the pool wall body is embedded in stratum, the pool wall body is formed by concrete adding silicon powder and calcium nitrite mixed solidification, epoxy resin coating is fixedly arranged in the lower end of the pool wall body inside, the epoxy resin coating is arranged in the pool wall body inside arc, drainage hole is set in the both sides of the pool wall body and is close to its lower end, the both sides of the pool wall body and located corresponding drainage hole place are fixedly set with through pipe, support is fixedly arranged in the pool wall body inside.The utility model in the present application, the methane tank is arranged in arc epoxy resin coating, drainage hole and support can make rainwater to be discharged smoothly, protect red mud fermentation bag from soaking in accumulated water in use process, and can be reserved expansion joint for red mud fermentation bag, adapt to expansion and shrinkage of temperature change and prevent accumulation of snow.
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Description

Technical Field

[0001] This utility model relates to the field of red mud membrane biogas digester technology, and in particular to an outdoor, corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage. Background Technology

[0002] The red mud flexible biogas digester is a foldable biogas device made of red mud composite membrane and high-strength industrial polyester fiber mesh. It consists of two types of components: gas storage bags (cylindrical / rectangular) and fermentation tanks (teapot-shaped / floating dome-shaped). Its core materials are corrosion-resistant, UV-resistant, flame-retardant, and have a wide temperature range adaptability (-20℃ to 50℃). It has a service life of 15-20 years and supports rapid installation (completed within 1 hour) and mobile use.

[0003] Research indicates that existing outdoor anaerobic fermentation red mud membrane biogas digesters, designed to be corrosion-resistant, freeze-resistant, and sun-resistant, suffer from water accumulation due to years of rain and snow. This water is difficult to drain, and the gas storage bag, being in contact with the bottom of the digester, is easily soaked in water for extended periods, thus reducing its lifespan.

[0004] Therefore, those skilled in the art have provided an outdoor, corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for manure to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an outdoor anaerobic fermentation red mud membrane biogas digester for manure that is corrosion-resistant, freeze-resistant and sun-resistant. The biogas digester allows rainwater to drain smoothly through an arc-shaped epoxy resin coating, drainage holes and supports, protecting the red mud fermentation bags from water immersion during use. It also allows for expansion joints to be reserved for the red mud fermentation bags to adapt to temperature changes and prevent snow accumulation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An outdoor, corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage includes a digester wall embedded in the ground. An epoxy resin coating is fixedly installed at the lower end of the interior of the digester wall. Drainage holes are provided on both sides of the inner wall of the digester wall near its lower end. Through pipes are fixedly installed on both sides of the digester wall at the corresponding drainage holes. A support is fixedly installed inside the digester wall. The above technical solution allows rainwater to drain smoothly through the arc-shaped epoxy resin coating, drainage holes, and support, protecting the red mud fermentation bag from water immersion during use. It also allows for expansion joints to accommodate temperature changes and prevent snow accumulation.

[0007] Furthermore, the epoxy resin coating is arc-shaped and disposed inside the pool wall; The above technical solution, which uses an epoxy resin coating in an arc shape inside the pool wall, helps to facilitate the drainage of accumulated water.

[0008] Furthermore, the corresponding drain hole and the through pipe are interconnected; The above technical solution allows water to be directed to a designated discharge location through the interconnection between the drainage hole and the pipe.

[0009] Furthermore, the bracket is made of hot-dip galvanized steel; The above technical solution uses a bracket made of hot-dip galvanized steel to prevent the bracket from rusting and corroding due to constant rain and snow, thus reducing its service life.

[0010] This utility model has the following beneficial effects: This utility model proposes an outdoor corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for manure. The biogas digester allows rainwater to drain smoothly through an arc-shaped epoxy resin coating, drainage holes, and supports, protecting the red mud fermentation bags from water immersion during use. It also allows for expansion joints to accommodate temperature changes and prevent snow accumulation. Attached Figure Description

[0011] Figure 1 This is a three-dimensional view of an outdoor corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage proposed in this utility model. Figure 2 This is a schematic diagram of the wall structure of an outdoor, corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage, as proposed in this utility model. Figure 3 This is a schematic diagram of the support structure of an outdoor corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage proposed in this utility model. Figure 4 This is a cross-sectional view of an outdoor, corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage, as proposed in this utility model.

[0012] Explanation of reference numerals in the attached figures: 1. Pool wall; 2. Epoxy resin coating; 3. Drain hole; 4. Pipe; 5. Support. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] Reference Figure 1-4 This utility model provides a specific embodiment: an outdoor corrosion-resistant, frost-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for manure, including a digester wall 1 embedded in the ground. An epoxy resin coating 2 is fixedly installed at the lower end of the interior of the digester wall 1. Drainage holes 3 are opened on both sides of the inner wall of the digester wall 1 near its lower end. Through pipes 4 are fixedly installed on both sides of the digester wall 1 at the corresponding drainage holes 3. A support 5 is fixedly installed inside the digester wall 1. Rainwater can be smoothly discharged through the arc-shaped epoxy resin coating 2, drainage holes 3, and support 5, protecting the red mud fermentation bag during use. The inner wall is protected from water immersion and expansion joints can be reserved for the red mud fermentation bags to adapt to temperature changes and prevent snow accumulation. The epoxy resin coating 2 is set in an arc shape inside the pool wall 1, which helps the water to drain smoothly. The corresponding drain hole 3 and the through pipe 4 are interconnected, which can guide the water to the designated discharge location. The bracket 5 is made of hot-dip galvanized steel, which prevents the bracket 5 from rusting and corroding due to rain and snow all year round, thus reducing its service life.

[0015] Working principle: When using this outdoor corrosion-resistant, frost-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester, the first step is to construct the pool wall 1, which is made of concrete mixed with silica powder and calcium nitrite and embedded in the ground. This gives the pool wall 1 its frost-resistant and sun-resistant properties. At the same time, the ground of the pool wall 1 is hardened and protected against corrosion by an epoxy resin coating 2. Meanwhile, the drainage holes 3 and pipes 4 allow water that has accumulated in the pool wall 1 over the years to be drained, preventing water accumulation. Then, the red mud fermentation bags are laid on the support 5, keeping them away from the ground of the pool wall 1. This allows for expansion and contraction of the red mud fermentation bags and protects them from snow accumulation. The support 5 is made of hot-dip galvanized steel, which protects it from rust and corrosion caused by rain and snow over the years.

[0016] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0017] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0018] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An outdoor corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage, comprising a digester wall (1), characterized in that: The pool wall (1) is embedded in the ground. An epoxy resin coating (2) is fixedly installed at the lower end of the pool wall (1). Drainage holes (3) are opened on both sides of the inner wall of the pool wall (1) and at its lower end. A through pipe (4) is fixedly installed on both sides of the pool wall (1) at the corresponding drainage hole (3). A bracket (5) is fixedly installed inside the pool wall (1).

2. The outdoor corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage as described in claim 1, characterized in that: The epoxy resin coating (2) is arc-shaped and located inside the pool wall (1).

3. The outdoor corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage as described in claim 1, characterized in that: The corresponding drain hole (3) and the through pipe (4) are interconnected.

4. The outdoor corrosion-resistant, freeze-resistant, and sun-resistant anaerobic fermentation red mud membrane biogas digester for sewage as described in claim 1, characterized in that: The bracket (5) is made of hot-dip galvanized steel.