Overflow valve and compressor installed with same

Abstract

The invention provides an overflow valve and a compressor installed with the overflow valve. Adjustment operation based on adjusting a cover is not needed, and operation of the overflow valve is high in precision and improves productivity. The overflow valve is provided with a barrel-shaped valve housing, a valve body configured in a central hole of the valve housing, a spring unit applying forces on a direction of closing the valve, and a fixing cover fixed on the rear end of the valve housing. A front end of the valve housing is installed in an air chamber of a compressor main body. Through making valve body operation pressure Pv lower than overflow pressure P0 and making a vent hole on the fixing cover as a damping hole in a small-hole shape, the diameter of the damping hole being lower than 2.0 mm, pressure difference Pd is generated between the central hole and external atmosphere. The sum (Pv+Pd) of the valve body operation pressure Pv and the pressure difference Pd is set as overflow pressure P0.

Description

technical field [0001] The invention relates to an overflow valve and a compressor equipped with the overflow valve, which is suitable for use in the emergency repair of air leakage by sequentially inputting sealant and compressed air into a tire that has already leaked to repair the air leakage. Relief pressure is adjusted when the relief valve is used, thereby improving productivity. Background technique [0002] A relief valve described in Patent Document 1 below is known as a relief valve used in a compressor for air leakage emergency repair. like Image 6 As shown, the relief valve a includes a cylindrical valve housing c, and the front end portion of the valve housing c is attached to the air chamber b1 of the compressor main body b that generates compressed air. A center hole h is formed in the valve case c, and the center hole h is formed such that an air inlet h1 communicating with the air chamber b1 is provided at the front end thereof and opened at the rear end. ...

AI Technical Summary

Problems solved by technology

The reason is that although the relief pressure is determined by the separation / contact of the valve body e with respect to the valve seat portion of the air inlet h1 from a structural point of view, the rubber material e1 of the valve body e is affected by the separation / contact. Due to the influence of the shape and deformation of the above-mentioned overflow pressure, it is easy to cause the deviation of the above-mentioned relief pressure, so it needs to be adjusted by the adjustment valve g

[0004] However, there is a problem that it takes a lot of time and labor to perform the adjustment work for all the relief valves a, resulting in a significant drop in productivity.

Images