Sealing device for diameter gauge

Abstract

The invention relates to a sealing device which is used for keeping a detection instrument and detection equipment clean and dried. The sealing device comprises an inflation mechanism for inflating air into an inner cavity of the diameter gauge, an air source of the air inflation mechanism is clean air, and inflated air is discharged from a gap and / or a hole on the diameter gauge; when the air inflation mechanism inflates air into the inner cavity of equipment, positive pressure is surely generated in the inner cavity of the diameter gauge, so that fresh and clean air replenished by the air inflation mechanism is naturally discharged from a structural gap between parts and dust, impurities, and water vapor outside the diameter gauge cannot enter the diameter gauge, and the inner cavity of the diameter gauge is clean and dried; and when the air is inflated, air continuously flows to exert a function of reducing temperature of the parts of the diameter gauge. Therefore, the sealing device has the reliable function of cleaning and sealing, and solves the problems of the temperature reduction of the diameter gauge; and the cost of the device is obviously reduced, and a complex sealing structure is not needed to be arranged, so that the processing cost of the diameter gauge is reduced simultaneously.

Description

technical field [0001] The invention relates to a cleaning and sealing device for maintaining a clean and dry interior of testing equipment. Background technique [0002] In metallurgy, especially in the iron and steel industry, it is necessary to conduct on-line and real-time diameter detection of the wire and bar at the inlet and outlet of the rolling mill during the rolling process, so as to set the working parameters of the rolling mill according to the size of the incoming material or to detect the wire and bar. In case of size deviation, the rolling mill can be adjusted and controlled in time to ensure the rolling yield. [0003] However, because steel rolling is in a high-temperature, high-humidity, and high-dust environment, and the newly rolled wire and rod are also in a high-temperature state, it is very difficult to seal and clean the caliper for online detection of wire and rod diameters. Reliability and device stability are difficult to guarantee. In the prior...

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Problems solved by technology

[0003] However, because steel rolling is in a high-temperature, high-humidity, and high-dust environment, and the newly rolled wire and rod are also in a high-temperature state, it is very difficult to seal and clean the caliper for online detection of wire and rod diameters. Reliability and device stability are difficult to guarantee

In the prior art, the inner chamber of the caliper and the external environment and the area where the wire rod passes are strictly sealed with gaskets, rings, etc. to prevent dust, impurities, moisture, etc. from entering the inner cavity of the caliper, but such The consequence is that the temperature in the inner chamber of the caliper is very high, which affects the stability of the caliper operation; that is to say, it is difficult to realize sealing and cooling at the same time in the prior art

And because the caliper is a precision device with a complex structure and various connection shapes and structures, it is difficult and costly to achieve sealing

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