PRESSURE RELEASING ASSEMBLY, DEVICE FOR SEPARATING CAP FROM TANK, PORTABLE SPRAYER, PORTABLE SPRAYER ASSEMBLY AND DECOMPRESSION MECHANISM FOR LIQUID IN TANK

摘要

PROBLEM TO BE SOLVED: To decompress a fluid tank before sepn. by providing the assembly with a pressure releasing mechanism inclusive of a relatively displaceable first part and second part, which first part opens the pressure to the second part and releases the detention of a cap and which second part enables ventilation without releasing the detention of the cap to the first cap. SOLUTION: An aperture 201 in a driving power head 20 mounted onto the upper part of a tank 100 is fixed to the inlet 103 of the tank 100 and the driving power head 200 is so designed that the sepn. from the tank 100 is not the cause for the sudden pressure release of the tank 100. The driving power head 200 has a detention characteristic. The driving power head 200 is required to release the detention before the release or removal of a screw when the sprayer is once assembled and is completely filled with the pressure. The drop of the tank pressure lessens the labor necessary for releasing the detention of the driving power head 200 in releasing the detention. As a result, the pump unit may be released and detached from the detention by decompressing the tank 100 and may be separated from the fluid tank 100.