SU706637A1 - Magnetically controlled valve - Google Patents

Description

I

The invention relates to the field of pipe fittings and can be used in valves with manual or remote control.

A magnetically controlled valve is known, in the case of which a bore, connected to the spool, and a permanent magnet fixed on the manual actuator f 1 are mounted.

A disadvantage of the known valve is the small pulling force developed by the driving magnet.

A magnetically controlled valve is also known, which includes a housing in which a spool is mounted associated with a crust mounted in a separation tube rigidly connected to a permanent magnet located between two fixed plates of a magnet of a soft material and a driving cup 2.

A disadvantage of the known magnetically controlled valve is the presence of grip parts, which leads to a reduction in the durability of operation.

The purpose of the present invention is to eliminate the above disadvantage.

The goal is achieved by the fact that a shunt, made in the form of two plates of a magnet of a soft material, is installed in the drive glass with the possibility of its rotation relative to the axis of the separation tube.

FIG. I shows the valve in the closed position; in fig. 2 is a view along arrow B in FIG. one; in fig. 3 shows section A-A in FIG. one; in fig. 4 - valve in the open position; in fig. 5 is a view along arrow B in FIG. four; in fig. 6 shows section A-A in FIG. four.

Structurally, the valve consists of a body 1 with a saddle 2, in which a spool 3 is installed, connected to a bark 4 placed in a separating tube 5. A return spring 7 is placed between the bark 4 and a stop 6. The permanent magnets 8 are permanently mounted on the separating tube 5 which are poles. The poles are tightly pressed to the plates 9 and 10, made of a magnet of a soft material. The magnetic shunt And, made in the form of plates, is rigidly connected to the drive cup 12, which can rotate about the axis of the separation tube 5 and has two

fixed positions. There are gaps between the magnet 8 and the separation tube 5, as well as between the magnet 8 and the shunt 11, providing a more intense distribution of the magnetic flux through the plates 9 and 10.

Valve works as follows.

When the valve is opened, the drive cup 12 with the shunt 11 rotates around the axis of the separation tube, and as a result, the magnetic conductor consisting of the magnet 8, the plate 9, the shunt 11, the plate 10, opens. Since the gap in this magnetic circuit is larger than the gap between the crust 4 and the stop 6, the measles 4, overcoming the force of the spring 7, are attracted to the foot 6, the short circuit of the magnetic circuit consisting of the magnet 8, the plate 10, the stop 6, the core 4, the plates 9. Anchor 4c spool 3 departs from the saddle 2, opening a hole for the passage of the working medium.,,

When the valve is closed, the drive cup 12 with the tongue 11 is transferred to another fixed position, and the magnetic circuit consisting of the magnet 8, the plate 9, the tongue II, and the plate 10 closes.

The force of attraction of the core 4 to the foot 6 decreases, and the measles 4 together with the spool 3 under the action of the spring 7 moves to

 lower position, blocking the passage in the saddle 2.

In the proposed valve, there is no friction between the working surfaces of the shunt 11 and the plates 9 and 10, as a result of which the wear of the working surfaces of these parts is eliminated and the durability of the valve as a whole increases.

Claims (2)

1. The patent of Germany No. 1195121, cl. 47 g 45/02, 1966. 2. USSR author's certificate No. 406483, cl. F 16 K 31/08, 1974 (prototype). IX Y W ten eight eleven P h: I XI-L 12 In and d. 5 NFH LA  5 .-v 1Sh37 eleven 12