How to maintain the screw of a gate valve? Please help make a sleeve for it
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It is required to install a sleeve on the screw rods of all gate valves at the station. I’m not sure what to do; since it doesn’t affect the operation of the valve (that is, the lifting of the screw), it should be able to stay in place without falling off, especially when the valve is closed. The processing should not be too complex; it should be generally applicable, at least to valves with a single nominal diameter. I have measured it, and even the dimensions of the screw rods vary, even when it comes to their nominal diameter.
For what kind of sleeve to use? Simply apply thick butter to it and then attach a rubber tube of the appropriate diameter.
How can I determine the valve opening degree after covering the screw rod? This is feasible for normally open valves, but it poses difficulties for valves that are opened and closed frequently.
For those that are turned on and off frequently, just apply plenty of butter directly; no cover is needed. It is generally used as a gate valve and is not opened and closed frequently; otherwise, the valve model has been selected incorrectly. :lol
:Lol :lol When the valve is closed, the sleeve can just be hung aside for use; the original poster shouldn’t overcomplicate things.
We all just apply a lot of butter and wrap it in plastic wrap. The extra cover you use is, in my opinion, unnecessary
:lol :lol My sister’s wording: just apply a lot of butter. However, the method is good and deserves extra points.
If it were my own valve, I would also apply butter to maintain it. And this has always been the way it has been maintained in the past. Unfortunately, in recent years leaders have placed more emphasis on aesthetics than on performance. They forbid us from using butter, saying it looks ugly. We need to bring out the natural color of the screw rod. Not only are we required to maintain the screw rods every day, but we also have to fit stainless steel sleeves around them. It’s not easy to do work these days; most managers don’t come from the grassroots level, and even if they have had some brief experience there, it’s only superficial. Lacking any experience, and being arrogant enough to refuse to listen to the opinions of frontline employees, insisting on doing things their way. Just by giving advice, you think you’re making excuses for being lazy. It’s not easy to work on the front line. :L
I’ve seen a type of stainless steel cover that is integrated with the locking nut of the handwheel; a long groove is machined into the side of this cover to facilitate observation of the screw’s upward and downward movement. In my opinion, it still doesn’t provide protection against rust or dust – it’s merely something that looks good to the manager. To put it in an inappropriate way, it would be great if there were a material that could fit tightly around the screw, allowing it to move in and out, and that was also transparent and resistant to aging. Hehe. This post was last edited by bingyu252 on 2009-4-15 at 13:30
Use 3 or 4 thin stainless steel rods or tubes to create a frame, and suspend a corrugated rubber sleeve inside it; it should be easy to shape it – as long as the sleeve isn’t fixed completely and one end can move, that’s fine. As for how to design LZ specifically, you can think about it; I won’t go into details. Such costs are definitely lower than those of using stainless steel pipes to create a protective cover directly, and it is both convenient and aesthetically pleasing.
Then don’t process stainless steel; process PVC or PE instead. Does stainless steel also rust easily?……