pressure barrel of ro ​​water purifier

Abstract

The invention belongs to the field of household water purifiers, and in particular relates to a water storage pressure barrel in an RO water purifier. A pressure barrel of an RO water purifier, including a pressure barrel body. An inlet and outlet are provided at the top of the pressure barrel body. The inlet and outlet are also provided with a pressure limiting valve to prevent overpressure; the pressure limiting valve includes a valve seat, a ball valve core and a A piston assembly used to drive the ball valve spool to rotate; the piston assembly includes a permanent magnetic piston, a valve stem used to drive the ball valve spool to rotate, and a permanent magnet pressure ring; one end of the valve stem is fixedly connected to the ball valve spool, and the other end of the valve stem is connected to the The permanent magnet piston rotates and fits, and the permanent magnet pressure ring is sleeved outside the valve stem; the permanent magnet piston and the permanent magnet pressure ring are in corresponding positions and the magnetic levels repel each other; the permanent magnet piston is sealed and installed in the installation cavity of the piston assembly, and the pressure input surface faces the bypass. Channel output. In the pressure barrel of the present invention, when the water in the pressure barrel is filled up to generate water injection pressure, the pressure limiting valve closes the water inlet, thereby limiting the pressure in the barrel from continuing to increase and preventing the pressure barrel from bursting.

Description

technical field [0001] The invention belongs to the field of household water purifiers, in particular to a water storage pressure barrel in an RO water purifier. Background technique [0002] The pressure tank is mainly used to store water in household RO water purifiers, and generally bears relatively high pressure. With the fierce competition, the price of pressure barrels has dropped, and plastic barrels have continued to replace steel barrels. In the existing market, in order to save costs, the plastic wall of the plastic pressure barrel is made relatively thin. Due to the influence of the manufacturing process and the overload of water storage, the plastic pressure tank will gradually expand. Every year, there will be plastic pressure tanks that are difficult to withstand pressure and cause explosions, causing danger to the home kitchen and causing huge compensation losses for the manufacturer. [0003] However, facing the pressure of competition, many manufacturers a...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor safety of the existing pressure tank, and provide a pressure tank of RO water purifier. When the water in the pressure tank is filled up to generate water injection pressure, the pressure limiting valve closes the water inlet, thereby limiting The pressure in the barrel continues to increase to prevent the pressure barrel from bursting; when the external pressure of water injection is removed, it will automatically open and become normally open

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