How to make a lid that is easy for people to use
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It is a rectangular tank containing waste material (with barium sulfate and concentrated sulfuric acid). A 50 cm flange along with gaskets is welded to the top surface of the tank for sealing purposes. This flange has to be opened every day (it’s quite heavy), and when it needs to be tightened again, the flange holes have to be realigned – the gaskets being too soft, which often results in misalignment between the flange holes and the gasket holes. Is there any good way to ensure proper sealing while also making disassembly easier?
What is the purpose of taking it apart? First, think about whether there’s a way to avoid demolition
Why not use a magical thing – a valve?
Personally, I think everything said above makes sense. Is waste being poured in there every day? A valve can be added to the existing flange, along with a larger flanged funnel on the valve, so that the valve can be opened without having to remove the flange.
When using a valve (with a funnel), it is necessary to avoid the situation where, with only one feeding port, the gas inside escapes and causes the liquid to splash out; therefore, there should also be an exhaust port (valve).
It is mainly used to draw out waste sulfuric acid through the rubber hose connected to a vacuum pump; beneath the waste sulfuric acid is barium sulfate, forming separate layers above and below. When drawing off waste sulfuric acid, it is necessary to find a low point, and it is important not to let barium sulfate be drawn off as well (as this can cause blockages in the pipes). With flanges, it is mainly possible to roughly see whether the waste acid has been completely removed. If valves are used, it is also difficult to control the depth of insertion of the steel wire tube into the liquid surface, and barium sulfate can easily be drawn out, causing the pipeline to get blocked.
If the amount of waste liquid to be processed per day is constant, a plug pipe can be welded in by making an opening in the large flange, with its opening positioned at the bottom of the layer of waste sulfuric acid. Just add a sight glass next to it for observation!
Make a channel-shaped clip out of stainless steel, divided into four sections connected by shafts; at the joints, use springs to create a clip suitable for use on vehicles. The cover is secured at the corners with bolts, and it can be rotated to remove waste material. Once that is done, the clip can be used to hold everything in place. Hehe, for reference only.
One option to consider is using something called a calamite (commonly used in car repair for clamping purposes); this way, there’s no need to work on the flange holes every time the component is removed or installed
Fasten with heavy buckles; that’s probably what was mentioned upstairs. Search for heavy-duty buckles on Taobao.
Consider using the last quick-opening blind flange.