Level sight lens and method and tool for assembling same

Abstract

The invention discloses a level sight lens and a method and tool for assembling the level sight lens. The level sight lens comprises a lens body, an O-shaped sealing ring and a prospective lens. The prospective lens comprises a lens sheet and a lens sheet base, a level sight hole is formed in the lens body, and a mounting cavity used for mounting the O-shaped sealing ring and the prospective lens is arranged on the periphery of the upper portion of the level sight hole; an annular pressing sheet is arranged on the upper edge of the mounting cavity and arranged on the upper surface of the lens body, and the annular pressing sheet can be bent inwards to be attached to the inclined face of the circular cone table portion of the lens sheet base. The method for assembling the level sight lens comprises the step A of placing the sealing ring and the prospective lens in the mounting cavity of the lens body in sequence, and the step B of providing the assembling tool and bending the annular pressing sheet on the lens body inwards to be attached to the inclined face of the circular cone table portion of the lens base. The assembling tool comprises a press block, a cavity is arranged on the bottom portion of the press block, and the inner side wall of the cavity is an inclined face with an inclined center. According to the level sight lens and the method and tool for assembling the level sight lens, the lens sheet base is pressed by the annual pressing sheet, the defects that in the prior art, due to threaded connection, processing is complex, efficiency is low, the bearing capacity is low, and corrosion easily occurs are avoided.

Description

technical field [0001] The invention relates to a sight glass, in particular to a structure of the sight glass, an assembly method thereof and an assembly tool. Background technique [0002] The sight glass is an auxiliary accessory in the refrigeration system. Through it, the status of the refrigerant in the system can be clearly known, so that it can be known in advance whether there is a problem with the refrigerant and the system. Existing sight glass, if attached figure 1 , 2 As shown, it includes a mirror body 1, an O-ring seal 2, a lens 8, a gasket 9 and a lens seat 3. The mirror body is provided with a sight fluid hole 11 that penetrates up and down, and the sight fluid hole on the upper part of the mirror body is surrounded by a There is a cavity for sequentially installing O-shaped sealing rings, lenses, gaskets and lens holders. The cavity is provided with internal threads, and the lens holder is provided with external threads. The lens holder is connected to th...

AI Technical Summary

Problems solved by technology

The problems of this threaded connection method are: the processing technology of the thread is complicated and the efficiency is low, especially the processing of the internal thread; the pressure bearing capacity of the threaded connection method is low, and the thread is easy to rot, thus reducing the use of the sight glass life

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