Decompression air supply valve for toilet

Abstract

The invention relates to the field of ship living utensils, and provides a decompression air supply valve for a toilet. The decompression air supply valve comprises a hand wheel, a screw rod, a spring seat, a main spring, an exhaust seat, a valve body, a main valve disc and a return spring; the upper part of the screw rod is connected with the hand wheel; the lower part of the screw rod penetrates through an upper cover to be connected with the spring seat; a thread kinematic pair is arranged between the screw rod and the upper cover; the upper cover is sleeved with the upper part of the valve body; a bottom cover is arranged at the bottom of the valve body; the upper part of the main valve disc is connected with the exhaust seat; the return spring is arranged between the lower part of the main valve disc and the bottom cover; the main spring is arranged between the spring seat and the exhaust seat. The pre-pressing force of the main spring is adjusted by rotating the hand wheel to drive the screw rod to move; and the opening degree of the main valve disc is controlled through interaction of the main spring and the return spring, and large-range pressure difference control is achieved by adjusting the pre-tightening force of the main spring. The decompression air supply valve may effectively reduce air noise and exhaust noise when toilet dirt is blown away, and is simple in structure, safe to use and reliable in work.

Description

technical field [0001] The invention relates to the field of ship living appliances, in particular to a decompression air supply valve for toilets. Background technique [0002] The decompression air supply valve for toilet mainly provides decompressed compressed air for toilet sewage discharge. [0003] At present, medium-pressure air is mainly used for sewage discharge of toilets, and the blowing-off pressure of sewage cannot be adjusted according to the overboard pressure. Large air noise and exhaust noise will be generated when blowing off with a large pressure difference. In addition, the pressure setting range of general marine pressure reducing valves is limited, which cannot meet the wide range of pressure difference control when blowing off dirt. Contents of the invention [0004] In view of the above defects or improvement needs of the prior art, the present invention provides a decompression air supply valve for toilets, which can effectively reduce the air noi...

AI Technical Summary

Problems solved by technology

[0003] At present, medium-pressure air is mainly used for toilet sewage discharge, and the blowing-off pressure of sewage cannot be adjusted according to the overboard pressure. Large air noise and exhaust noise will be generated when blowing off with a large pressure difference

In addition, the pressure setting range of the general marine pressure reducing valve is limited, which cannot meet the wide range of pressure difference control when blowing off the dirt.

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