SU1691641A1 - Solenoid-operated valve - Google Patents

Description

figure 1

This invention relates to pipe fittings.

The purpose of the invention is to increase the reliability of operation due to the microdeformation of the asperities of a pair of a locking member - a saddle by turning the locking member relative to the saddle and increasing the force of the closing member to come to the saddle.

FIG. 1 shows the solenoid valve in the closed state; in fig. 2 - the same, in the open position; in fig. 3 shows section A-A in FIG. one.

The solenoid valve consists of (fig. 1, 2) body 1, made of a non-magnetic material, with an inlet pipe 2, an outlet pipe 3 and a saddle 4, a locking member 5 fixed on the rod 6, which is connected to the core 7 of the electromagnetic actuator, containing a winding 8 and a magnetic core 9 with a stop 10. A return spring 11 is installed in the grooves of the core 7 and foot 10, which presses the stop prgan 5 to the saddle 4. A working gap 12 is formed between the mountaineers of the foot 10 and the core 7. Coaxially with the rod 6 and bark 7 electromagnetic drive inside the housing 1 time alternating flat multipole (fig. 3) (with at least four poles) stationary permanent magnets 13, 14, 15 with central holes 16, 17, 18 for the passage of rod 6 and movable permanent magnets 19, 20 (fig. 1 ). The fixed permanent magnets 13, 14, 15 are fixed in the housing 1, and the movable magnets 19, 20 are fixed on the rod 6 and are placed respectively between the fixed magnets 13, 14 and 15, the poles of the fixed magnets 13 and 14, which are oppositely positioned relative to the moving magnet 19, have opposite magnetization. The poles of the stationary magnets 14 and 15, opposedly located relative to the moving magnet 20, have opposite magnetization. The poles of the movable magnets 19 and 20, which are opposedly located relative to the stationary magnet 14, also have opposite magnetization.

The device works as follows

In the initial position (Fig. 1), the voltage on the winding 8 is not applied. The locking member 5 is pressed against the saddle 4 by the force of the return spring 11 and the attractive forces of the poles of the moving magnets 19 20 fixed on the rod 6 to the corresponding opposite poles of the stationary magnets 14 and 15 fixed in the housing 1. At the same time, the working gap 12 between the ends of the cores 7 and 10 foot - maximum

When voltage is applied to the winding 8, the measles 7, together with the rod b and the movable magnets 19, 20 and the locking organ 5 fixed on it, begin to move upwards to the foot 10 in the central holes 16, 17, 18, overcoming the force of the spring 11 and the force of attraction poles of movable magnets 19, 20 to the corresponding poles of stationary magnets 14 and 15.

0 After the separation of the locking organ 5 from the saddle 4 and at the approach of movable magnets 19 and 20 to the corresponding upper fixed magnets 13 and 14 (Fig. 2), as a result of the interaction of like poles of movable magnets 19, 20 and fixed magnets 13,14, rotation occurs magnets 19, 20 together with the rod 6, the locking member 5 and the core 7 with respect to the stationary magnets 13, 14. Then the rotation of the moving magnets 19, 20 occurs already due to the forces of attraction of the poles of the stationary m-magnet to the corresponding opposite poles of the moving magnets 19, 20. When this Ohm, for example, the North Pole

The 5 fixed magnet 13 attracts the south poles of the moving magnet 19, and at the same time the south poles of the fixed magnet 14 draws to itself the north poles of the movable magnet 20. At the end

0 of the stroke of the core 7, the rotation of the locking member 5 around its vertical axis relative to the saddle 4 is completed. Kla, the pan is in the open state.

After relieving voltage from winding 8

5 under the action of the return spring 11, the bark 7, together with the rod 6 and the movable magnets 19, 20 and the locking organ 5 fixed on it, will begin to move down to the saddle 4, overcoming the force of attracting the opposite poles of the moving magnets 19, 20 to the corresponding poles of the stationary magnets 13 14. At the approach of the locking member 5 to the saddle 4, as a result of the repulsive forces of the poles of the movable magnets 19, 20 from the corresponding poles of the fixed magnets 14, 15, the movable magnets 19, 20 rotate together with the stem 6, the locking body 5 and the core 7 relative to the respective stationary magnets 14, 15. Then, this rotation will be promoted already by the attractive forces of the poles of the moving magnets 19, 20 to the opposite poles of the respective stationary magnets 14, 15. From the moment the valve 5 touches the valve body 4 , due to the attractive forces of the poles of the moving magnets 19, 20, to the corresponding opposite poles of the kepodvoltage magnets 14, 15,

micro displacement of the locking member 5 relative to the saddle A, associated with the microdeformations of the saddle A and the locking member 5. Under the action of the return spring 11 and the attractive forces of the poles of the magnets 19 and 14, 20 and 15, contact surfaces of the asperities of the saddle 4 and the locking member 5 arise compressive and tangential stresses. The micro displacement of the locking member 5 relative to the saddle 4 and the microstrain microdeformations of the pair of the locking member 5 - the saddle 4 is continued until the elastic forces from the deformed saddle 4 balance the forces acting on the locking organ 5 from the return spring 11 and attracting each other. other opposing poles of magnets 19 and 14, 20 and 15. The valve is in the closed state. The gap 12 between stop 10 and bark 7 is the maximum.

The force developed by the electromagnet must exceed the force of the spring 11 and the force of attraction of the moving magnets 19.20 to the stationary magnets 14.15. The force of the spring 11 in the compressed state should

ten

Apply the force of attracting magnetic magnets 19, 20 to the fixed magnitudes 13, 14.

Claims (1)

Invention Formula A solenoid valve comprising a housing of non-magnetic material with inlet and outlet nozzles and a seat. an overlapped shut-off organ, SBYAZENNY through a rod with a spring-loaded bark of an electromagnetic actuator having a winding and a magnetic circuit with a foot, characterized in that, in order to increase reliability, it is equipped with alternating flat coaxially with a drive with at least four poles fixed, having a central hole , and movable permanent magnets, each movable magnet mounted on the rod between adjacent stationary, the rod is passed through the holes in the stationary magnets, the ends of the magnets are oppositely magnetized, and the poles of the moving magnets in one of the extreme positions stem located above the opposite poles of the moving magnets. // fzg.2. Aa fig.Z