| 摘要 |
<p>The present invention relates to a pressure regulator (1) of an air supply apparatus for respiratory protection, which is capable of being easily assembled. The pressure regulator includes: a casing (3); a pressure reducing valve (5) which controls the flow of compressed air supplied to inside a surface body through an air inlet (17) formed on one side of the casing (3); a diaphragm (7) which repeats expansion and contraction according to a wearer′s breath and intake which enters a positive pressure space (S) of the casing (3) through a vent (19); a link assembly (9) which opens and closes the pressure reducing valve (5) according to the expansion and contraction of the diaphragm (7); and a valve housing (10) which surrounds the pressure reducing valve (5) to support the link assembly (9), wherein the pressure reducing valve (5) enables to adjust internal pressure on compressed air supplied through the air inlet (17). The link assembly (9) includes a drive link (11) which opens and closes the pressure reducing valve (5); a motive link (13) which pressurizes or releases the drive link (11); and an electromotive link (15) which allows the drive link (11) to pressurize or release a valve body (33). Thus, the pressure reducing valve can be opened and closed by the link assembly, thereby adjusting the opening of the pressure reducing valve accurately and stably, and easily adjusting the degree of decompression by the pressure reducing valve using a reaction adjusting handle.</p> |
