One-way exhaust valve for floating bag

Abstract

The invention discloses a one-way exhaust valve for a floating bag. The one-way exhaust valve comprises a valve seat, a valve rod, a compression spring, a corrosion sheet, a knurled nut and a lockingscrew, wherein a seal ring is mounted in a seal groove of the valve rod; the spring is arranged on a cylinder structure of the valve rod main body in a sleeving manner; the valve rod penetrates into the valve seat, then the corrosion sheet is mounted, and the knurled nut is screwed on a threaded joint of the valve rod; and when the bottom end of the valve rod is flush with the bottom end of the valve seat, the knurled nut is adjusted in position and is fixed through the locking screw. A protective film and an indication board are glued to the upper end side face and the top end of the valve seat with glue, are torn off when the one-way exhaust valve is used and mounted at the lower end of the floating bag. When floating equipment works, the air enters the floating bag; the corrosion sheetis in contact with seawater to have electrochemical reaction, and the diameter of the corrosion sheet is smaller and smaller; and when the diameter of the corrosion sheet is smaller than the diameterof a valve seat hole, the valve rod is pushed out downwards and the air is discharged out of the valve seat under the action of the spring. The one-way exhaust valve is simple in structure and reliable in working and solves the problem that small space and small size cannot adopt electronic control measures to exhaust the air.

Description

technical field [0001] The invention relates to the technical field of buoyant bag control, in particular to a one-way exhaust valve for a buoyant bag in floating equipment in the ship field. Background technique [0002] A product is equipped with flotation equipment, and the buoyancy bag is the main part of the buoyancy equipment. When a product completes its task in the deep sea, the buoyancy equipment needs to inflate the buoyancy bag to float the product out of the sea. If the product is not recovered after floating in the sea for a period of time, in order to prevent the disclosure of trade secrets, the gas in the buoyancy bag needs to be drained, and the product becomes negative buoyancy and sinks to the seabed. [0003] At present, the floating equipment has a small space, many groups and components, and the design requires that the buoyancy bag cannot input electrical signals. At the same time, strict weight requirements are put forward. Therefore, a small, simple a...

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Problems solved by technology

[0003] At present, the floating equipment has a small space, many groups and components, and the design requires that the buoyancy bag cannot input electrical signals. At the same time, strict weight requirements are put forward. Therefore, a small, simple and reliable mechanical exhaust valve is needed to realize

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