SU95885A1 - The current model of hydraulic ramming - Google Patents

Description

The subject of the invention is a working model of a hydraulic ram for demonstration tellerk serving as a school tool.

Known hydraulic rams with the use of an air cap and a cylindrical through-baffle valve, made in the shape of an overturned glass, do not provide a high useful return of water.

In the described actual model of the ram, this disadvantage is eliminated by the fact that the body of the ram is equipped with an annular expansion, located at the level of the baffle valve at the moment of water hammer, designed to drain water into the air cap, and to block the through hole of the baffle valve using set screw.

Such a device minimizes the distance between the baffle valve and the water inlet, which increases the useful return of water and accelerates the pace of operation of the ram.

The drawing shows a model of a ram in the section.

The housing / operating model of a hydraulic ram with a ring-shaped extension 2 enclosing it has a flange 5 in the upper part and a screwed-in bottom 4 in the lower part. In the center of the bottom there is a tube 5 with a slot 6 and a thread 7 below. Three holes S are made in the bottom, through which the rods 10 freely adhere to the clamp 9. On the rings of the rods there are depressions into which the balls // are abutted against the screw-on housing / tube 11, in the center of which there is an opening for the tube 5. A adjusting screw 75, which rests on a spring (5), is pressed into the tube (5) and presses a valve consisting of a stem (4) and a pad (75). There is a stud (7) in the stem (7) that can move in the slot 6, which restricts the movement of the valve.

No. 95885-2 -

Inside the body is placed a cylindrical baffle valve 18 in the form of an overturned glass, supported by a spring 19. mounted on the washer 9.

The casing with its annular extension 2 is connected by four tubes 20 to an air cap 21, which has a lifting tube 22. Dashed line 23 shows a cutout in the casing for water discharge. A feed tube 24 is attached to the upper part of the housing / screwed in and attached to the water tank.

The ramming operation is performed as follows:

The spring 19 lifts the baffle valve 18 to the side 3, and the spring 16 is the valve pad 15 until the stud 17 is not fully rested in the slot 6. At this point, the upper part of the valve pad / 5, reaching line AB, opens the hole in a burglar valve} 8 and part of the water from the tube 24 enters the body and is discharged through the cutout 23. Another part of the water with its pressure on the burglar valve will overcome the resistance of the spring 19 and lower the burglar valve. At the moment of contact of the inner surface of the burglar valve 18 with the valve pad 15, the water discharge stops and a hydraulic shock occurs that, overcoming the resistance of the springs 16 and 19, lowers the burglar valve even lower and opens the passage of water into the annular expansion of the housing and through the air cap 21 into the tube 22. The subsequent vacuum will enable the springs to return the valves to their original position, after which the cycle repeats.

Subject invention

The current model of a hydraulic ram for de-installation purposes with the use of an air cap and a spring-loaded cylindrical through baffle valve placed in the body, made in the shape of an overturned cup, characterized in that, in order to increase the useful return of water, a blocking bore valve is used. the second spring-loaded valve, installed with the help of an adjusting screw, and for draining water into the air cap, the housing is provided with an annular extension located at the level of the breaker valve-a at the moment of water hammer.

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