SU1372145A1 - Solenoid valve - Google Patents

Abstract

This invention relates to pipe fittings. The aim of the invention is to increase the reliability of the valve due to the selective sensitivity of the core position indicator. When the electromagnet is turned on, the measles close to table 7, while in the magnetic core 6 the magnetic flux sharply increases. As a result, the lever plate 10 sticks to the magnetic circuit 6, turns and turns on microswitches 12 for signaling the position of the locking member 4. In the case of jamming of the locking member 4, the latter does not reach the table 7, and the magnetic flux in the magnetic core 6 with the coil 8 turned on is insufficient strips 1 0. 2 silt

Description

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This invention relates to pipe fittings.

The aim of the invention is to increase the reliability of the valve due to the selective sensitivity of the valve position indicator.

FIG. 1 shows the valve section; in fig. 2 shows section A-A in FIG. one.

The solenoid valve consists of a housing 1 with connecting nipples 2 and a saddle 3, which interacts with a locking member 4, spring 5 pressed to the saddle, a magnetic conductor 6 with a stop 7 and an electromagnet coil 8. On the upper part of the foot 7 is mounted a sensing element made of a magnet of flexible material in the form of a spring-loaded spring 9 of the lever bar 10. The spring 9 is located on the rod 11.

Lever plate 10 is in contact with the signaling and current control unit, which represents a closed micro switch 12 installed on the brackets 13.

Part of the magnetic circuit at foot 7 is tapered.

The solenoid valve operates as follows.

In the de-energized position under the influence of the elastic forces of the spring 5, the locking member 4 is pressed against the seat 3 located in the housing 1. Simultaneously under the influence of the spring 9, the lever bar 10 is in the depressed position and does not interact with the microswitches 12 rigidly fixed on the brackets 13.

Forcing the valve, i.e. such a mode in which at the initial time (opening time) a greater current flows through the coil 8 than in the hold mode. Current control is carried out with the help of a microswitch.

When the electromagnet is turned on in the mains under the action of magnetic forces, the measles approaches the foot 7 n.

when reached, the gap becomes zero.

The resistance of the magnetic circuit drops sharply; the magnetic system is saturated by increasing the magnetic flux.

A portion of the magnetic flux is redistributed along lever strip 10,

at the same time, forces arise to rotate the strap 10 before it sticks to the magnetic circuit, as a result, microswitches operate, controlling the amount of current through the coil 8, as well as the valve position signaling circuit.

To hold the lever bar 10 in a pressed position against the magnetic conductor at a reduced current through the coil. The section of the magnetic circuit is chosen smaller than the defining section of the core.

When the coil is disconnected from the power source, the valve comes to its original

state - closed.

In the case of jamming of the core, the magnitude of the magnetic flux in the magnetic conductor 6 is insufficient for rotation of the strip 10, the command is not received.

Claims (1)

Invention Formula A solenoid valve, comprising a housing with inlet and outlet channels, a shut-off member rigidly connected to the electromagnet core, a magnetic conduit with a stop, and a corrosive position indicator with a switch, which is characterized by the fact that, in order to increase the reliability of operation, The core position indicator is made in the form of a spring-loaded lever bar of a magnetically soft material that can interact with the switch and is placed on the magnetic core from the side of the foot, and the magnetic core under the lever bar in a radial direction. ying cone with a base near stop. fpae. 2