SU370095A1 - ZOLOTNIKOVY AIR DISTRIBUTOR - Google Patents

Description

one

The invention relates to pneumatic fittings and can be used in pneumatic automation systems.

Spool air distributors are known, comprising a housing, a spool, a cap, an inlet, a spout, and a discharge nipple and a control knob. The rotary valve is provided with a concentric grooves on the end face. One part of the grooves, interconnected by radial grooves, supplies compressed air to the automation elements, and the other part of the grooves, also interconnected by radial grooves, reports the automatics elements to the atmosphere.

However, when turning the spool from one position to another, it is necessary to expend a significant amount of physical or mechanical energy, since the high pressure of the gas from the feed system acts on the slide plate.

The purpose of the invention is to reduce the force applied when the control knob is turned.

For this, the core of the spool has an atmospheric axial bore, into which a normally closed valve is inserted, interlocked with a normally open valve of the air supply system.

This greatly reduces the force applied to the control knob when turning the spool from one position to another.

FIG. 1 shows the proposed distributor; in fig. 2 - the same, top view; on

FIG. 3 (a, b, c, d, d, e}) - the position of the distributor; in Fig. 4, a spool with a section along A-A.

The valve includes a housing / in which the spool 2 is inserted, and to the lower end

a lid 3 is attached through an installation gasket. A supply nipple is screwed on the outside from the outside, and a spring 5 is installed on the collar. A normally open valve 6 is inserted into the hole through which control air is supplied.

The force from the spring is transmitted through a normally open valve to the ball 7 and through the valve.

it on the normally closed valve 8, installed from the bottom side in the axial hole of the valve. A spring 9 is freely inserted into the same hole at the top, having bottom and top plates at the top and bottom. The spring is supported

the ball 10 and the pusher 11. The upper part of the spool is rigidly connected with the clevis 12 to the clamp 12, with which the control handle 14 is connected via an axis / pin. The pin 15 is pressed into the front portion of the handle.

To connect the distributor to the systems

pneumatic automatics are screwed into its body

The distributor works as follows.

The control air from the source through the supply valve 4 enters the cavity under the lid 3 and then through the radial grooves B at the end of the spool 2, the holes in the housing / and the outlet nipples 16 are supplied to the specified pneumatic automation systems. The spring 5 holds the normally open valve in its extreme upper position and, through the ball 7, presses the normally closed valve 8, closing the axial hole in the spool 2.

To switch the spool valve to supply control air to other specified pneumatic automation systems, move the control knob 14 upwards, turning it around the axis 13, while the knob 14 with its opposite condom presses the pusher 11, the ball 10 and the free-lying spring 9, the spring is compressed, and the normally closed valve 8 opens. Pin 15 is withdrawn from the housing groove. The normally closed valve, through the ball 7, compresses the spring 5. Lastly, acting on the normally closed valve 6, closes the opening in the lid 3, through which control air is supplied, while the air from the cavity under the lid 3 is vented to the atmosphere.

After the pin 15 leaves the slot of the housing, the control knob 14 together with the clamp 12 and the spool 2 rotates and is set to the desired position, fixed

pin 15 in the corresponding groove of the housing. The handle 14 is lowered, the pin 15 is inserted into the corresponding groove of the housing /, the plunger // returns to the initial position, the spring 9 is fully opened, the normally closed valve 8 is closed, and the normally open valve 6 is opened. At the same time, the control air passes through the supply pipe 4 to the cavity under the cover 3 and

then, through the radial grooves B at the end of the spool 2, the holes in the body / and the discharge chutes 16 are fed to the rear pneumatic automation systems. In order to prevent the penetration of control air into the pneumatic automation systems that are not working at the moment, there is a common annular groove and waste from the sealing surface of the spool at the end of spool 2 (see Fig. 4).

its grooves B, which are connected to the opening D in the housing 1, and through it to the atmosphere.

Subject N o d e b e

Spool air distributor, made in the form of a housing with a lid, inlet and outlet shtutserov, control knobs and spool fitted on the end of the ring radial grooves, characterized in that, in order to reduce the force applied when turning the control knob, the core the spool has an atmospheric axial bore into which a normally closed valve is inserted, interlocked with a normally open valve of the air supply system.

FIG. 3