SU1530706A1 - Pneumatic cartridge - Google Patents

Abstract

The invention relates to sewage systems, namely, devices for cleaning pipelines with solid inclusions, including pipelines of small diameters, and improves the cleaning efficiency of pipelines from solid deposits due to the formation of spool 10 and air pipe 9 of the damper chamber 4, which grooves 12 and channels 11 in spool 10 communicate with exhaust openings 5 in housing 1. When the spool 10 moves, the openings 18 are blocked to the right, stopping the flow of air into the charging chamber 3. At the same time The openings 14 connect the charging chamber 3 to the annular groove 15, and through it to the channels 6 protected from dirt by valves 7 with springs 8, which allows reducing the pressure in the charging chamber 3. Under the action of pressure on the spool 10 the latter instantly opens the exhaust ports 5, through which the compressed air from the working chamber 2 with an explosion enters the environment. 5 il.

Description

2ff

ate

00

about

about

ABOUT)

/ 5 75

Phie.

The invention relates to the field of sewage, in particular to devices for cleaning pipelines with solid deposits, including pipelines of small diameters.

The purpose of the invention is to increase the efficiency of cleaning pipelines from solid deposits.

Fig. 1 shows a pneumatic cartridge, a section; in Fig. 2, a section A-A in Fig. 1; in Fig. 3, a pneumopatron valve, section; figure 4 - section bb in fig.Z; on fig.Z - section bb In figure 3.

The housing 1 of the pneumo-cartridge contains the working 2, charging 3 and damper A chambers. In the housing 1 of the pneumatic cartridge at the border of the working and charging chambers, exhaust ports 5 are made at an angle to the axis of the pneumatic cartridge, which ensures sufficient reactive exhaust gas. In the area of the charging chamber 3 in the casing 1 of the pneumo-chopper, the channels 6 are made, and the valve 1 is valuable from the ingress of check valves 7 with springs 8. Through the working chamber 2, the charging chamber 3 and the damper 4 passes the air duct 9 of variable section. The variable cross section of the air duct allows obtaining different areas of the end surfaces of the spool 10 (the area of the left end surface on the side of the working chamber is larger than the area of the right end surface on the side of the charge chamber). The spool 10 is located in the charging Kar-iepe 3 and in the zone of the damping chamber has channels 11, which are connected by a circular groove 12, which connect the damping chamber through the exhaust holes with the environment. On the side of the charging chamber 3, the spool 10 has a section 13 with a large inner diameter and a smaller wall thickness, in which radial holes 14 are made, which connect the charging chamber 3 with an annular groove 15 in the housing 1 s

Section 13 of the spool 10 abuts the spring 16 o

The air enters the working chamber through the openings 17 in the air duct 9, and into the charging chamber through the openings 18 “The pneumatic cartridge has a tail 10

15

20

25

thirty

35

40

45

50

Air through the air duct 9 through the holes 17 and the holes 18 fill the working chamber 2 and the charging chamber. Holes 17 and 18 calculate 1 so that the charge chamber 3 is first filled, and then the working chamber 2.

Due to the fact that the area of the end surface of the spool 10, left more than the area of the end surface of the spool on the right, a pressure differential occurs on the spool, directed toward the charging chamber 3 and moving the spool 10 in the same direction. At the same time, in the damping chamber 4, at the moment of the start of movement of the spool, the air pressure is equal to the environmental pressure, since the channels 11 and the annular groove 12 of the spool 10 communicate the damper chamber 4 through the exhaust ports 5 with the surrounding environment. When the spool moves to the right, even before opening the exhaust ports 5, the spool 18 overlaps the spool body, which prevents air from entering the charging chamber 3. At the same time, the radial holes 14 connect the rear chamber 3 to the annular groove 15 and through xy with channels 6, protected from ingress of valves 7 with springs B, which allows the opening of exhaust ports 5 to reduce the pressure in the charging chamber 3 and drastically increase the pressure differential across the spool 10. Under the action of this power the spool 10 almost instantly open yvaet iyhlopnye holes 5, through which compressed air from the working chamber 2 with vzrshom exits into the environment.

When the spool 10 moves to the right, the channels 11 and the annular groove 12 of the spool overlap with the housing 1, after which, as a result of a decrease in the volume of the damper chamber 4, the pressure in it increases and at the end of the stroke of the spool 10 reaches a value capable of smoothly decelerating the spool 10 and eliminating its blows air duct protrusion 9.

At the same time, the spring 16 is compressed by the action of the spool 10.

After the exhaust, when the pressure in the working chamber 2 decreases almost to

tovik 19 with openings 20 for fixing 5 environmental pressure, spool

five

0

five

0

five

0

five

0

Air through the air duct 9 through the holes 17 and the holes 18 fills the working chamber 2 and the charging chamber 3. The holes 17 and 18 of the calculation 1 so that the charge chamber 3 is first filled, and then the working chamber 2.

Due to the fact that the left surface area of the spool 10 on the left is larger than the right side surface area of the spool, a pressure differential occurs on the spool, which is directed towards the charging chamber 3 and moves the spool 10 in the same direction. At the same time, in the damping chamber 4, at the moment of the start of movement of the spool, the air pressure is equal to the ambient pressure, since the channels 11 and the annular groove 12 of the spool 10 communicate the damper chamber 4 through the exhaust holes 5 with the surrounding environment. When the spool moves to the right, even before opening the exhaust ports 5, the spool 18 closes the spool body, which stops the flow of air into the charging chamber 3. At the same time, the radial holes 14 connect the charging chamber 3 with the annular groove 15 and through the xy - with channels 6, valves 7 with springs B, protected from ingress, which, before opening the exhaust ports 5, reduce the pressure in the charging chamber 3 and drastically increase the pressure differential across the spool 10. Under the action of these forces, the spool 10 almost instantly opens the exhaust holes 5 through which the compressed air from the working chamber 2 with the impact exits the environment.

When the spool 10 moves to the right, the channels 11 and the annular groove 12 of the spool overlap with the housing 1, after which, as a result of a decrease in the volume of the damper chamber 4, the pressure in it increases and at the end of the stroke of the spool 10 reaches a value capable of smoothly slowing the spool 10 air duct 9.

At the same time, the spring 16 is compressed by the action of the spool 10.

After the exhaust, when the pressure in the working chamber 2 decreases almost to

No emergency cable (not shown).

The pneumatic chuck works as follows

10 under the influence of compressed air in the damper chamber 4 and the spring 1G begins to move toward the working

cameras - to the starting position. As soon as the spool 10 opens the openings 18, the compressed air begins to flow into the charging chamber 3, raising the pressure in it, under the action of which the spool 10 will be pressed against the stop of the housing 1, reliably blocking the exit from the working chamber 2. The working chamber 2 will begin to fill with air and the cycle of the pneumatic bullet

Claims (1)

Invention Formula A pneumatic cartridge containing a body with exhaust openings, a spring-loaded spool and an air duct forming the working and charging chambers which, in order to increase the efficiency of cleaning B / 2 s jy ///////// / eleven //////// 77Л pipelines from solid deposits, the casing from the side of the charging chamber is made with an annular groove and channels with non-return valves that connect the charging chamber with the environment, the air line is made widening at the end located in the spool and forms a damper chamber with it an annular groove with channels through which the damper chamber communicates with the exhaust holes, and radial apertures, which connect the charging chamber with the annular groove of the body, and the area of the end face over awns spool from the processing chamber greater than the area of its end surface from the charging chamber. / 7 77 Thebes. 2 z / " ////// 777 //// 77Л Y / 77 ///// A ten one at Phie. H Bb . FI.5