How To Drill A Hole On Sight Glass

Scraper sight glass (sight glass with wiper, flange sight glass) is a style in flat sight glass. It is suitable for petroleum, chemical, food and other industrial containers. It is used to observe and monitor the working reaction of the medium inside the container to ensure production safety and product quality.

When the conventional sight glass is used on some viscous medium, the sight glass will stick to the medium, which affects the clarity of observation and directly affects the quality of the product. It turns out that the only way to disassemble the sight glass and then clean the glass, but this prerequisite requires the container to stop working first, which is very time-consuming and affects the production schedule.

The advantage of the scraper sight glass is that the sight glass does not need to stop working. When there is dirt on the sight glass surface, directly rotate the handle on the sight glass with brush to remove the dirt on the sight glass surface, which saves the cleaning time to the greatest extent, saves working hours and improves Efficiency.
For the safety of the squeegee sight glass transportation, after the squeegee assembly is debugged on the lens, the squeegee assembly is removed and packaged and shipped separately. Install on the sight glass.
Scraper sight glass is used to observe the flow reaction equipment of liquid, gas, steam and other media, and its window glass should be kept clean and dust-free;

Sight glass disc with wiper hole have a wiper in the center to clean the dirty on the surface of the inner side of the sight glass. So there is a hole in the center of the sight glass to install the wiper. So how to drill a hole on the sight glass?

When drilling the sight glass, sometimes a shell-like defect is generated around the hole. In order to prevent such defects, when the hole is punched to the average thickness of the board, the hole is punched on the reverse side, and another piece of sight glass is attached to the back of the sight glass to make the hole together.

>>Super-hard drilling method

The super-hard drilling method is the most commonly used method in mechanical drilling. It is suitable for perforating 3-15mm thick sight glass. Super hard triangle drill, two-edge drill, twist drill can be used.

It is generally believed that the front angle of the drill is 90°, the cutting speed is 1-30m/min, and the cutting fluid is water, light oil, turpentine, etc.

>>Grinding drilling method

By grinding and processing small-diameter perforation, drills made with threaded wire of ∮1mm or less can also be used with tubular needles of ∮1mm or more. In order to obtain a relatively large hole diameter, a cylindrical tool made of copper or brass called a disc cutter is used to fix it on the drill press. In order to cool the glass and tools, it is necessary to fully inject the grinding fluid and add it from the cut