SU1721365A1 - Electromagnetic valve - Google Patents

Abstract

This invention relates to pipe fittings. The purpose of the invention is to improve the reliability of the valve, which is achieved by increasing the flow rate of the medium through the discharge channel. When applying voltage to an electromagnetic actuator, the measles 14 rises and opens the discharge opening. The medium from the cavity 10 is discharged, the membrane 9 and the main locking member are raised, and the medium flow at the diffuser 12 creates an area of reduced pressure. 3 il.

Description

1

This invention relates to pipe fittings.

The purpose of the invention is to increase the reliability of the electromagnetic valve, which is achieved by increasing the flow rate of the medium through the discharge channel.

Figure 1 is a diagram of the solenoid valve in the closed position; figure 2 - the same, in the open position; on fig.Z - section aa in figure 2.

The solenoid valve includes a housing 1, an inlet 2 and an outlet 3 nozzles with cavities 4 and 5, a shutter formed by a saddle 6 and a main locking member 7 with a discharge channel 8 in the form of a tube inserted into the outlet nozzle 3, a sensitive element - a membrane (or piston ) 9, on which the main closure body 7 is fixed and which with the body 1 forms a supermembrane cavity 10. The membrane 9 has a filling opening 11, and the tube with the discharge channel 8 is made in the form of a diffuser 12, which is turned by its expansion towards the outlet of the medium. The solenoid valve has an electromagnetic actuator containing a coil 13, a measles 14 with a control valve 15 on it, a spring 16.

The solenoid valve operates as follows

When the valve is turned on, a voltage is applied to the winding of the coil 13, the measles 14 with the locking element 15 moves upward, opening the discharge port 8 of the tube and compressing the spring 16. After opening the discharge port 8, the overmembrane cavity 10 through the diffuser 12 communicates with the cavity 5 of the outlet 3.

The fluid from the cavity 10 flows into the outlet nozzle 3, and the pressure (PB) in the cavity 10 decreases. Membrane 9 under the action of pressure difference Pm P- (- Pv

it bends upwards, moves the main locking member to the upper position and opens the passage in the saddle 6 of the main gate (Fig. 2). The fluid rushes into cavity 5

outlet pipe 3. As the fluid moves along the outer surface of the diffuser 12, its speed increases as the living section of the outlet pipe decreases by the cross-sectional area

diffuser 12 (Fig. 3). The maximum fluid velocity will occur before a sudden expansion of the channel, i.e. at the outlet section of the diffuser 12 (Fig. 3), where a vacuum and pressure zone is formed

in the diffuser.

Execution of the discharge channel in the form of a diffuser, facing its expansion towards the exit of the medium, will ensure unconditional emptying of the supermembrane

when the valve is open, the membrane will constantly be in the extreme upper position, its oscillations are eliminated and a guaranteed discharge from the cavity 10 is provided

through the hole 11 of the liquid, which increases the reliability of the valve.

Claims (1)

Invention Formula A solenoid valve, comprising a housing with inlet and outlet nozzles and a saddle, a main locking member with a discharge channel in the form of a tube inserted into the outlet nozzle, a sensing element with a charging opening and an electromagnetic actuator with a bark and a control valve on it, in order to increase reliability in operation, the tube with a discharge channel is made in the form of a diffuser, its extension towards the outlet of the medium. sixteen Aa Sfafr max U.pake output kn Fig.Z J-1 Fig 2