Bidirectional gas valve kit for sealed cabin of underwater robot and gas nozzle matched therewith

Abstract

The invention discloses a bidirectional gas valve kit for a sealed cabin of an underwater robot and gas a nozzle matched therewith. The bidirectional gas valve kit comprises a ventilating bolt A, a ventilating bolt B, a plug and a nut. The ventilating bolt A is mounted on a cover of the sealed cabin through the nut, the lower end of the ventilating bolt A is located outside the cover of the sealedcabin and the lower end of the ventilating bolt A is located in the cover of the sealed cabin, and the lower end of the ventilating bolt A is connected to the ventilating bolt B through a thread; andthe plug is mounted at the upper end of the ventilating bolt A. The bidirectional gas valve kit can restore quickly by means of deformation of a spring at the moment of being taken away after suckingand pressurizing the sealed cabin. A valve element of the ventilating bolt B is ejected to an upper cover by the spring to isolate the cabin and outside, so that air backflow during suction or pressurizing due to pressure difference between the indie and outside of the cabin is avoided, and therefore, it is closer to an ideal condition of sucking and pressurizing the sealed cabin. The bidirectional gas valve kit sucks and pressurizes the sealed cabin at one step, so that the maintenance and preparation work efficiency of the underwater robot is improved.

Description

technical field [0001] The invention relates to a sealed cabin of underwater equipment, in particular to a two-way air valve kit and a matching air nozzle for the sealed cabin of an underwater robot. Background technique [0002] Most of the one-way ventilation valves in the prior art are designed as an integrated structure, have only a single function, or can only suppress pressure, or can only draw negative pressure, and are generally used in land-based equipment. [0003] Such as Figure 10 As shown, the structure of this one-way ventilation valve includes a valve body, a valve core and a valve tube (wherein the main technical structure is a tapered portion and an elastic sealing device). There is a main through hole in the valve body, and a limit device is set on the inner wall of the main through hole. The lower end surface of the limit is a conical surface, and the upper end of the valve body is fixed with a locking part; the valve core includes a tapered part, an annu...

AI Technical Summary

Problems solved by technology

[0006] 1. The gasket is prone to leakage or even fall off

[0007] 2. Different working environments require check valve devices in different directions, which is not universal

[0008] 3. Sometimes the airtight cabin of the underwater robot needs to be pumped to a negative pressure, and sometimes it needs to be pressurized to a positive pressure. The one-way ventilation valve cannot solve two problems at the same time, and multiple one-way ventilation valves are required to cooperate to complete the requirements.

[0009] 4. At present, there is no one-way vent valve specially designed for the sealed cabin of underwater robots, and there is no special method for pressure testing the air leakage position of underwater robots, and it is impossible to pump negative pressure to make the sealed cabin run smoothly

Images