Rainwater storage tank

Drawing Specification for Anaerobic Rainwater Collector

一、设计总体概述 / 1. General Design Overview

中文：本设备为密封厌氧型雨水接收器，核心设计目标为***收集自然雨水，通过可控阀门实现雨水定向导入，全程采用全密封罐体结构，隔绝外界空气、蚊虫、灰尘及杂菌污染，构建稳定的罐内厌氧环境，彻底杜绝积水滋生蚊虫幼虫、藻类及各类微生物的问题，实现雨水无污染、原生态厌氧储存。设备整体结构简洁、安装便捷、免日常维护，适用于户外露天、庭院、楼顶、试验场地等各类场景的雨水收集与密闭储存。设备整体分为四大核心模块：雨水集雨导流模块、控水阀门模块、密封厌氧储水容器模块、安全泄压防护模块，各模块协同工作，兼顾集水效率、密封厌氧稳定性、防污染、防胀裂等核心性能。

English: This equipment is an anaerobic rainwater collector. Its core design objective is to efficiently harvest natural rainwater. Rainwater is guided into the tank through a controllable valve. The fully sealed tank isolates ambient air, mosquitoes, dust and microbial contaminants to form a stable anaerobic environment inside. It fundamentally prevents the breeding of mosquito larvae, algae and microorganisms, enabling pollution-free, in-situ anaerobic storage of rainwater. Featuring simple structure, easy installation and maintenance-free operation, it is suitable for rainwater collection and sealed storage in open outdoor areas, courtyards, rooftops and test sites. The system consists of four core assemblies: rainwater collection and diversion assembly, flow control valve assembly, sealed anaerobic storage vessel, and safety pressure relief assembly. These assemblies work together to balance collection efficiency, anaerobic sealing stability, contamination prevention and anti-burst performance.

二、整体结构图纸标注说明 / 2. Drawing Notes for Overall Structure

中文：本设计图纸包含主装配总图、各部件拆分详图、尺寸标注图、安装示意图，图纸涵盖以下核心结构部件，所有部件尺寸可根据使用场景按需缩放，基础标准版参数如下：

English: This drawing package includes general assembly drawing, component detail drawings, dimension drawings and installation sketches. It covers the core structural parts listed below. All dimensions can be scaled according to application requirements. Standard baseline parameters are as follows:

1. 集雨接收装置（顶部集水机构）/ 1. Rainwater Collector (Top Catchment Assembly)

中文：位于设备***顶端，为敞口式集水结构，采用上宽下窄的漏斗式设计，***化承接雨水。顶部集雨口外径大于储水容器罐体直径，可有效拦截散落雨水，同时遮挡顶部缝隙，避免杂物落入。集水斗底部设置导流管道，垂直对接控水阀门，实现雨水定向输送。集水斗边缘做圆弧倒角处理，无尖锐棱角，防止积垢、积水残留，减少微生物附着基础。

English: Located at the top of the unit, it is an open catchment funnel (wide top, narrow bottom) to maximize rainwater capture. The outer diameter of the inlet is larger than the storage vessel to intercept splashing rainwater and block debris from entering. A diversion pipe at the funnel bottom connects vertically to the flow control valve for directional water transfer. The funnel edges are rounded without sharp corners to reduce scale buildup, residual water and microbial attachment sites.

2. 可控进水阀门组件（核心控水部件）/ 2. Controllable Inlet Valve Assembly (Core Flow Control Component)

中文：安装于集水斗导流管道与储水容器进水口之间，为设备关键连通部件，采用单向止水阀+手动控制阀双结构设计。雨天可自动导通，使集雨斗内雨水顺利流入密封容器；无雨状态下阀门自动闭合，彻底阻断容器内部与外界空气、蚊虫、污染物的流通通道，杜绝内外气体交换，保障罐内厌氧环境持续稳定。阀门密封面采用柔性防腐密封材质，闭合后零缝隙、零渗漏、零透气，从源头防止蚊虫飞入产卵、杂菌滋生。

English: Mounted between the funnel diversion pipe and the vessel inlet. It adopts a combined check valve + manual control valve design. It opens automatically during rainfall to let rainwater flow into the sealed vessel; when dry, it closes automatically to fully isolate the vessel interior from outside air, mosquitoes and contaminants, stopping gas exchange and maintaining stable anaerobic conditions. The valve sealing surface uses flexible anti-corrosion material. When closed, it achieves zero gap, zero leakage and zero air permeation to prevent mosquito oviposition and microbial contamination at source.

3. 全密封厌氧储水容器（主体储水结构）/ 3. Fully Sealed Anaerobic Storage Vessel (Main Water Storage Body)

中文：为设备主体储水单元，整体为密闭一体式罐体结构，无任何开放式透气、透水缝隙，是构建纯厌氧储水环境的核心结构。罐体采用整体焊接/一体成型工艺，顶盖与罐体之间采用法兰密封+硅胶密封垫双重密封结构，可完全隔绝外界氧气、蚊虫、灰尘、微生物进入罐体内部。容器内部无光照、无氧气补给、无外界生物进入，形成稳定厌氧环境，从根本抑制蚊虫产卵、藻类光合作用、细菌微生物大量繁殖，彻底解决传统敞口、半敞口储水设备积水发臭、滋生孑孓、水质变质的问题。罐体底部设置下沉式集水区，可沉淀雨水杂质，保证上层储水洁净。

English: This is the main water storage unit, an integrated hermetic tank without any open air/water passages, serving as the core structure to establish pure anaerobic storage environment. The tank is integrally formed or fully welded. The top cover is sealed by flange plus silicone gasket dual sealing system, completely blocking ingress of external oxygen, mosquitoes, dust and microbes. With no light, no oxygen replenishment and no external organisms inside, a stable anaerobic environment suppresses mosquito egg-laying, algal photosynthesis and bacterial overgrowth, eliminating odor, mosquito larvae and water deterioration common in conventional open/semi-open tanks. A sediment sump is designed at tank bottom to trap particulate impurities and keep upper-layer water clean.

4. 微泄压平衡机构（安全防护结构）/ 4. Micro Pressure Relief Assembly (Safety Protection Structure)

中文：因容器为完全密封厌氧结构，雨水流入、环境温度变化会导致罐内气压轻微波动，为此增设单向微泄压阀（只排气、不进气、不进水）。当罐内气压过高时，自动排出多余压力；常压状态下完全闭合，阻止外界空气反向进入罐体，既保障设备使用安全，又不破坏厌氧密封环境，避免罐体胀裂、变形。

English: As the vessel is fully sealed for anaerobic storage, rainwater inflow and ambient temperature variation cause minor internal pressure fluctuation. A one-way micro pressure relief valve (gas-out only; no air or water inflow) is installed. It automatically releases excess internal overpressure and remains closed under normal pressure to prevent reverse air ingress. It ensures operational safety without breaking the anaerobic seal and avoids tank swelling or rupture.

三、核心设计原理（厌氧防菌防虫机制）/3. Core Design Principle (Anaerobic Anti-mosquito & Anti-microbial Mechanism)

1. 厌氧环境构建原理 /1. Anaerobic Environment Establishment

中文：设备全程闭环密封，仅在雨水流入时通过阀门瞬时导通，雨水填充罐体逐步排出内部原有空气，进水结束后阀门立即闭合，配合单向泄压阀的气压调节功能，罐体内部无持续氧气补给，快速形成缺氧、无菌、无光的厌氧密闭环境，无法满足蚊虫生长、藻类繁殖、浮游生物滋生的生存条件。

English: The whole system is closed-loop sealed. The valve opens momentarily only when rainwater flows in. Rainwater fills the tank and displaces original air. After inflow stops, the valve closes immediately. Together with pressure regulation from the one-way relief valve, no continuous oxygen supply exists inside the tank, rapidly forming an oxygen-poor, sterile, light-free anaerobic environment which cannot support mosquito growth, algal propagation and plankton reproduction.

2. 防虫防微生物滋生原理 /2. Mosquito & Microbe Inhibition Principle

中文：完全密封结构阻断了蚊虫、飞虫、灰尘、外源细菌的进入通道，无蚊虫产卵介质、无微生物侵染源头；同时厌氧环境抑制绝大部分好氧细菌、藻类、浮游生物的繁殖代谢，雨水可长期保持洁净，无异味、无虫体、无污泥滋生。

English: The hermetic seal blocks ingress pathways for mosquitoes, flying insects, dust and exogenous bacteria, removing medium for mosquito spawning and sources of microbial contamination. Meanwhile, anaerobic conditions inhibit reproduction and metabolism of most aerobic bacteria, algae and plankton, so rainwater can stay clean for long periods with no odor, insects or sludge buildup.

3. 控水导流原理 /3. Flow Diversion & Control Principle

中文：漏斗式集雨结构提升雨水收集效率，单向阀门实现“只进不出、雨开无雨闭”的自动管控，避免人工操作失误导致的密封失效，保证每次集水完成后容器即刻恢复密闭厌氧状态。

English: The funnel-shaped collector improves rainwater harvesting efficiency. The check valve provides automatic control: water can flow in but cannot flow out; valve opens in rain and closes when dry. It prevents seal failure caused by manual misoperation and restores the vessel to hermetic anaerobic status right after each collection cycle.

四、标准设计尺寸参数（可定制）/4. Standard Design Dimensions (Customizable)

中文：本参数为通用标准版，图纸可根据储水量需求放大、缩小比例：

• 集雨斗：上口直径300mm，下口导流管直径20mm，高度80mm，漏斗倾角45°，集水无死角
• 控水阀门：DN20通用单向止水阀，耐水防腐材质，闭合密封率100%，导通通水顺畅无卡顿
• 储水罐体：圆柱形一体式结构，直径250mm，高度400mm，有效储水容积约18L，罐体壁厚3mm，耐压防变形
• 泄压阀：微型单向泄压阀，开启压力0.02MPa，仅排气不进气，适配密闭罐体气压平衡
• 整体高度：520mm，占地面积小，适配各类户外、室内放置场景

English: These are standard baseline parameters. The drawing can be scaled up or down according to required storage volume:

• Rainwater funnel: Top inlet Φ300mm, outlet diversion pipe Φ20mm, height 80mm, funnel angle 45°, no dead zones for water collection
• Flow control valve: DN20 standard check valve, water-resistant & anti-corrosion material, 100% sealing when closed, smooth flow without jamming
• Storage vessel: Integrated cylindrical tank, outer diameter Φ250mm, height 400mm, effective volume ~18L, wall thickness 3mm, pressure-resistant and anti-deformation
• Pressure relief valve: Micro one-way relief valve, cracking pressure 0.02MPa, gas-out only, for sealed tank pressure balancing
• Overall height: 520mm, small footprint, suitable for indoor and outdoor installation
  
  

五、材质选型说明（图纸材质标注依据）/5. Material Selection Specification (For Drawing Material Markup)

中文：所有涉水、外露部件均选用耐候、防腐、无毒、无菌材质，适配长期户外使用，无有害物质析出，不污染雨水水质：

• 集雨斗、储水罐体：食品级PP材质/304不锈钢材质，耐腐蚀、抗老化、不透光、密封性好，可长期户外暴晒、淋雨使用，不透光特性进一步抑制藻类滋生
• 阀门、管道配件：食品级PVC防腐材质，防水防锈，启闭灵活，密封性能稳定
• 密封垫片：食品级硅胶材质，耐高温、耐水泡、不老化、回弹密封性强，长期使用不失效
• 泄压阀：工程塑料+不锈钢密封芯，防水防尘，单向泄压性能稳定

English: All wetted and exposed components adopt weather-resistant, anti-corrosion, non-toxic and hygienic materials for long-term outdoor service, with no hazardous leaching to contaminate rainwater:

• Funnel & storage vessel: Food-grade PP / 304 stainless steel. Corrosion-resistant, UV-stable, light-proof and well-sealed. Light opacity further suppresses algae growth under long outdoor exposure.
• Valve & pipe fittings: Food-grade anti-corrosion PVC, waterproof, rust-proof, flexible actuation and stable sealing performance.
• Gasket: Food-grade silicone, heat-resistant, water-immersion resistant, anti-aging with strong resilient sealing for long service life.
• Relief valve: Engineering plastic + stainless steel sealing core, waterproof, dust-proof, stable one-way pressure relief.
  
  

六、装配与安装图纸说明 /6. Assembly & Installation Drawing Instruction

中文：

1. 将微型单向泄压阀固定于罐体顶部预留接口，确保安装密封严实，无漏气缝隙，排气方向朝外；
2. 控水阀门竖直安装在集雨斗下口导流管与罐体进水口之间，保证水流自上而下单向导通，无倒装、歪斜；
3. 集雨斗居中固定于罐体上方，接口处做密封处理，杜绝雨水渗漏、空气渗入；
4. 罐体法兰顶盖压实硅胶密封垫，均匀锁紧固定螺栓，保证罐体整体密闭，无任何透气缝隙；
5. 整体安装完成后进行气密性测试，确保罐体闭合后完全密封，满足厌氧环境要求。

English:

1. Mount the micro one-way pressure relief valve onto the prefabricated port on tank top. Ensure tight sealing without air leaks; exhaust faces outward.
2. Install flow control valve vertically between funnel outlet pipe and tank inlet to guarantee downward unidirectional flow; avoid inverted or skewed mounting.
3. Center the rainwater funnel on top of the tank and seal the joint to prevent rain leakage and air infiltration.
4. Compress silicone gasket under the flange top cover and fasten bolts evenly to keep the tank fully hermetic without air gaps.
5. Conduct air tightness test after full assembly to verify complete sealing and compliance with anaerobic requirements.
   
   

七、设备核心功能与技术特点 /7. Core Functions & Technical Features

中文：

• ***集水：大口径漏斗集雨设计，雨水收集利用率高，适配中小雨、大雨天气集水需求；
• 全厌氧密闭：无氧气、无光照、无外源污染，彻底杜绝蚊虫、藻类、微生物滋生；
• 自动控流：单向阀门自动启闭，无需人工干预，集水后即刻密封，维持厌氧环境稳定；
• 安全稳定：配备专用泄压结构，避免密封罐体气压失衡，防止设备变形、胀裂；
• 免维护：整体结构无易损件，材质耐候防腐，长期使用无需频繁检修、清洗；
• 水质保真：全程密闭储存，雨水不接触外界污染物，无变质、无异味，原生态留存。

English:

• High-efficiency collection: Large-diameter funnel design for high capture efficiency, suitable for light, moderate and heavy rainfall.
• Fully anaerobic sealing: No oxygen, no light and no external contamination, completely suppressing mosquitoes, algae and microbes.
• Automatic flow control: Self-actuating check valve without manual operation; seal is restored immediately after collection to stabilize anaerobic conditions.
• Safe and reliable: Dedicated pressure relief structure prevents pressure imbalance, tank deformation and rupture.
• Maintenance-free: No fragile consumable parts. Weatherproof and corrosion-resistant materials reduce frequent inspection and cleaning.
• Preserve raw water quality: Fully enclosed storage isolates rainwater from external contaminants, avoiding deterioration and odor, preserving raw rainwater properties.
  
  

八、图纸包含附属说明 /8. Supplementary Drawing Notes

中文：

1. 图纸视图：包含主视图、俯视图、剖视图、部件拆分图，清晰展示内部厌氧腔体结构、阀门安装位置、密封结构细节；
2. 尺寸标注：所有部件长宽高、管径、间距、装配公差均精准标注，支持直接加工制作；
3. 技术要求：明确密封标准、气密性测试要求、材质标准、安装工艺要求；
4. 禁忌说明：严禁私自开孔、拆除泄压阀、更换非密封配件，避免破坏厌氧密封环境。

English:

1. Drawing views: Front view, top view, sectional view and exploded view, clearly showing internal anaerobic chamber, valve location and sealing details.
2. Dimension marking: Length, width, height, pipe diameter, spacing and assembly tolerances are precisely marked for direct fabrication.
3. Technical requirements: Specify sealing standard, air tightness test criteria, material specification and installation process requirements.
4. Prohibition notes: Unauthorized drilling, relief valve removal or replacement with non-sealed fittings are forbidden to protect the anaerobic sealing system.