SU1488615A1 - Drive pneumatic device - Google Patents

Description

The invention relates to a pneumatic equipment and is intended to perform a logical function OR in pneumatic systems of mechanization and automation of production processes. The purpose of the invention is higher2

improvement of reliability and service life of the pneumatic valve. The pneumatic valve OR comprises a housing 1 with a cylindrical cavity 4 connected to the inlet channels through the openings 5 and 6 in the ends and to the outlet channel through the opening 7 made in its middle part and a valve with sealing elements located in the cylindrical cavity 4. In the cylindrical cavity 4 fixedly installed two sleeves 8 and 9, between which there is a gap 10 located against the hole 2 of the output channel. On the inner surface of each sleeve 8 and 9, from the side of the gap 10, lead-in conical bores 12 and 13 are made. 2 ill. '

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The invention relates to a pneumatic equipment and is intended to perform a logical function OR in pneumatic systems of mechanization and automation of production processes;

The purpose of the invention is to improve the reliability and service life.

FIG. 1 shows a pneumatic valve with a valve in the middle position; in fig. 2 - the same, with the spool in the extreme position.

• The pneumatic valve OR contains a housing 1, provided with ends 2 and 3 in the ends. The internal cylindrical cavity 4 is connected to the inlet channels through openings 5 and 6 in covers 2 and 3 (at the ends) and to the output channel through o + version 7 made 20 its middle part.

In the cavity 4, the sleeves 8 and 9 are fixedly mounted with a gap 10 located against the outlet 7 of the output channel, as well as the valve 11. The 25 conical bores 12 and 13 are made on the 25th side of the sleeves 8 and 9 on the side of the gap 10.

The spool 11 has two sealing elements 14 and 15, contacting 30 with the inner surface of the sleeves 8 and 9 with the middle position of the spool 11 (with the extreme positions of the spool, the sealing elements 14 and 15 are in contact with one sleeve). In gold-35 Nike 11 bypass channels are made. 16-19.

Pneumatic valve works as follows.

When the input signal is fed in from 'to verst 6 of the input channel, the spool moves to the left (Fig. 2). While Compressed air from the inlet channel of the hole 6 through the bypass holes 17 and 16, aazor 10 and hole 7

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passes to the output channel. The last _{l is} connected to the hole 5, closed.

When the input signal is applied to hole 5, the spool 11 moves to the right. When this compressed air through the hole 5, the channels 18 and 19, the gap 10 and the hole 7 passes into the output channel.

10 With the passage of the spool 11 of the middle position (Fig. 1), each of the sealing elements 14 and 15 is located in the cylindrical part of the sleeves 8 and 9, which completely eliminates the connection between the inlet openings 5 and 6. Installation of two sleeves 8 and 9 with lead-in conical Bores 12 and 13 allows to increase the durability of the sealing elements 14 and 15 and the pneumatic valve OR as a whole.

Claims (1)

Claim Pneumatic valve OR, comprising a housing with a cylindrical cavity connected to the inlet channels through openings in the ends and with an outlet channel through an opening made in its middle part, and a spool with a sealing element located in the cylindrical cavity, characterized in that in order to increase reliability , in a cylindrical cavity, two bushings are fixedly mounted, between which there is a gap, located against the opening of the output channel, on the inside. the surface of each sleeve on the side of the gap is made inlet tapered bore, and the spool is provided with a second sealing element, and the sealing elements of the spool are associated with the inner surface of the sleeves with the middle position of the spool. 1488615 FIG. 2