Tool for rapidly detecting geometric tolerance of shaft hole of butterfly valve and butterfly plate

Abstract

The invention belongs to a detection tool, and particularly relates to a tool for rapidly detecting geometric tolerance of a shaft hole of a butterfly valve and a butterfly plate. The invention relates to a tool for rapidly detecting geometric tolerance of a shaft hole of a butterfly valve and a butterfly plate. The detection tool comprises a plug gauge with a key, a main cross beam, a limiting sleeve, an adjusting cross beam, a plug gauge and a nut. The tool has the advantage that the geometric tolerance of the shaft hole of the butterfly plate can be rapidly detected. The whole detection tool is an adjustable dynamic detection tool, the use is simple, after the detection tool is assembled, a proper plug gauge and a plug gauge with a key are matched, and the plug gauges are respectively aligned with the shaft holes at the two sides of the butterfly plate and are put into the shaft holes at the two sides of the butterfly plate, so that the form and location tolerance of key grooves in the shaft holes at the two sides and one side can be rapidly measured. Meanwhile, the full-depth form and location tolerance detection of the shaft hole of the butterfly plate can be realized by adjusting the movement of the cross beam. The plug gauge is fixed on the cross beam through the nut, so that the detection of butterfly plates with different specifications can be quickly completed within the adjusting range of the cross beam only by replacing a proper plug gauge, and the device has good universality.

Description

technical field [0001] The invention belongs to a detection tool, in particular to a tool for rapidly detecting the shape and position tolerance of a butterfly plate shaft hole of a butterfly valve. Background technique [0002] The invention is mainly used for the rapid detection of the shape and position tolerance of the shaft hole of the butterfly plate of the butterfly valve. [0003] Butterfly valve is a kind of valve commonly used in all walks of life. It has the advantages of simple structure, small installation size and quick switching. The butterfly valve is mainly composed of three parts: valve body, valve stem and butterfly plate. Coaxial shaft holes are processed on both sides of the butterfly plate. The valve stem is fixed on the valve body, and the butterfly plate moves around the valve shaft to realize the opening and closing of the valve. closure. Therefore, the processing of the shaft holes on both sides of the butterfly valve is the key to ensure the qual...

AI Technical Summary

Problems solved by technology

Therefore, the processing of the shaft holes on both sides of the butterfly valve is the key to ensure the quality of the butterfly valve. The size and shape and position tolerance of the shaft hole meet the design requirements, and the butterfly plate can be assembled correctly, realize the opening and closing functions of the valve, and realize the effective sealing of the valve; When the size and shape and position tolerance of the butterfly plate shaft hole do not meet the requirements, the butterfly plate may not be installed correctly in the valve body, and even if it is installed, there may be problems such as abnormal movement and unable to achieve effective sealing

With the wide application of butterfly valves, the caliber specifications of butterfly valves are getting larger and larger. In many applications, the caliber of butterfly valves exceeds DN2000, which puts forward higher requirements for the processing and testing of butterfly plates. The processing of shaft holes on both sides of butterfly plates It is impossible to achieve one-time clamping and processing in place, and the processing quality cannot be guaranteed; at the same time, the detection of the shape and position tolerances of the shaft holes on both sides cannot be accurately and quickly detected, and assembly rework often occurs, which not only delays the production cycle, but also causes problems. Butterfly valves bury hidden dangers of unstable quality

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