BRPI1107426A2 - permanent magnet trigger for liquid open / close valve - Google Patents

Abstract

permanent magnet trigger for liquid open / close valve, introduces the use of permanent magnet to trigger the actuation of said valves. thus the traditional use, whose activation of the piston was obtained by electric coil, is extended to other applications, where the activation of the piston is obtained by moving a permanent magnet. The movement of the permanent magnet that initiates the triggering of the drive may be obtained mechanically, pneumatically, thermally or otherwise.

Description

“PERMANENT MAGNET TRIGGER FOR OPEN / CLOSE VALVE TYPE”.

This patent proposes a method of firing the liquid open / close valves whose actuation force comes from the pressure in the liquid feed line itself. Movement of a permanent magnet outside the valve pressure chamber triggers the opening or closing of the valve.

Liquid open / close valves, whose actuation force comes from the pressure of the liquid feed line itself, are also known as assisted actuation valves and are widely used in the industry.

In these valves, a low trigger force trigger releases the use of line pressure to complete and maintain the opening or closing of the valve initiated by the trigger.

In the prior art, the trigger system is comprised of a magnetizable piston located within the valve pressure chamber and an electrical coil external to the valve pressure chamber whose electromagnetic field moves the piston. The movement of the piston introduces line pressure or ambient pressure into the valve pressure chamber, moving the diaphragm that allows or cuts the passage of liquid from the supply line to the effluent line.

Therefore, in the state of the art the trigger is by electric coil. Thus, the use of valves of the mentioned type contemplates applications where electric power is available for the coil, such as washing machines, dishwashers, water fountains. and industrial liquid and gas distribution facilities.

This patent extends the use of said valves for applications where the trigger is by permanent magnet movement, which in turn will move the valve piston. Movement of the permanent magnet may be by mechanical traction, thermal or pneumatic expansion, for example. Therefore, no use of electric coil. Figure 1 presents the invention in its most general form, that is, a permanent magnet is shown which, when displaced (1), promotes the displacement of the piston that triggers the opening or closing of the on / off valve assisted by the pressure of the liquid in the pipe. input. Figure 2 presents a solution in which the movement of the permanent magnet is promoted by the displacement of a flexible cable (1), connected to a pedal (2), which causes the movement. When the pressure on the pedal ceases, the return to the original position is by return spring. Figure 3 presents another solution in which the movement of the magnet is pneumatic, by pressure (1) originated by a piston connected to the pedal, which will move another piston connected to the permanent magnet.

Claims (1)

1. PERMANENT LIQUID TYPE TRIGGER FOR LIQUID USE OPEN / CLOSE VALVE claims a firing method which is characterized by the use of a permanent magnet to trigger the actuation of liquid open / close valves. Thus the use of said valves is extended to applications where it is not available or where it is not convenient to use electric power to drive an electric coil. Traditionally, according to the state of the art, it was the coil that moved the piston, triggering the actuation of the valve.