SU574578A1 - Air relief cock - Google Patents

Description

one

This invention relates to pipe fittings, in particular, devices for removing air from pipelines.

Known plungers for exhausting air from pipelines contain a ball float mounted in a housing with a guide rod and placed in the ver. parts of the float bolt 1.

Also known are air ducts for the discharge of air from pipelines, which contain a cylindrical float mounted in a housing with a guide rod and a shutter 2 located in the upper part of the float.

A disadvantage of known plungers is the low reliability of their operation, due to the fact that when the pipeline is filled with liquid, the displaced air with an amplifying flow entrains the float and prematurely closes the valve of the plunger, and the air remaining in the pipeline for a long time significantly reduces its capacity.

The use of such plungers does not exclude the occurrence of hydraulic shocks that destroy the pipeline. The disadvantage of such devices is also the limitations of its use.

The purpose of the invention is to increase the availability of work of plungers.

This is achieved in that in the head of the shutter

a vertical channel for exhausting air, limited by a guide sleeve with openings on the side surface communicating with the body cavity above the float, is made on the upper surface of the float a guide protrusion with a valve for blocking the drip, and the gate sleeve is mounted on a linear link that can be moved along the vertical axis. Moreover, the float is made in the form of a truncated cone, which narrows in the direction of the flow of exhaust air.

FIG. 1 shows a plunger, a longitudinal section; in fig. 2 - shutter located at the top of the float.

The plunger contains a cylindrical corus 1 with a flange 2 in the upper part and a flange 3 in the lower narrowed part. From above, the housing 1 is closed by a lid 4 with a hole 5 in the center and a shield 6, and from the inside of the lid 4 there is a heel rubber ring 7 pressed by the flange 8. Inside the case, the safety rod 10 is attached to the projections 9 with its iroshinamp and the guide rod II with a loosely mounted float 12, having the shape of a truncated copier. In the upper part of the float 12, a shutter 13 is fixed in the form of a spherical segment, in the head of which there is a vertical channel 14 for exhausting air and a guide sleeve 15 with holes 16 on the side surface over the float connected to the cavity of the housing 1 above the float 12. The shutter 13 is movably connected to the float 12 by means of the connecting sleeve 17. The stroke of the shutter 13 is limited by the collar 18, on the float 12 there is a guide protrusion with a valve 19 clamped by the sleeve 17. The valve closes the channel 14.

When the pipeline is filled with liquid, the air that is forced out of it enters the housing 1, flows around the safety disc 10, the float 12, and through the opening 5 enters the atmosphere. Upon further filling of the housing 1 with liquid, the float 12 floats up along the guide brush 11 and the shutter 13 tightly closes the opening 5, pressing the rubber ring 7 with a force equal to the working pressure in the pipeline. Such an arrangement of the closure 13 remains for the entire period of continuous operation of the pipeline until further emptying. After the body of the plunger is filled with water, the residual air and the air released from the liquid being transported are scaled in its upper part. In this case, the level of liquid in the housing is lowered, the float 12 together with the valve 19 is lowered, for example, up to the stop of the shoulder 18 of the connector sleeve 17, the air through the holes 16 and the channel 14 is removed to the atmosphere.

Such operation of valve 19 during the period of continuous operation of the pipeline repeats automatically as air is accumulated in the cornea 1 and removed to the atmosphere. When the pipeline is empty under the action of vacuum, the float 12, under the influence of its own weight and atmospheric pressure, is lowered along the guide rod I to the safety disc 10. Atmospheric air through the opening 5 fills the pipeline, eliminating the formation of a vacuum in it.

The use of the proposed plunger ensures reliable and complete release of air from the systems (pipelines), eliminates the occurrence of hydraulic shocks, i.e., increases the reliability of the plunger and the entire system (pipelines) as a whole.

Claims (2)

1.Vantuz for exhausting air from pipelines, containing installed in the housing a float with a guide brush and a shutter placed in the upper part of the float, characterized in that, in order to increase reliability, a vertical channel is provided in the head of the shutter for venting air bounded by a guide sleeve with openings on the side surface communicated with the body floor above the float , on the upper surface of the float there is a mantling protrusion with a valve for closing the channel, and the gate sleeve is mounted on the protrusion with a possibility of movement along the vertical axis. 2. Vantuz on p. 1, characterized in that the float is made in the form of a truncated cone, tapering in the direction of the flow of exhaust air. Sources of information taken into account in the examination 1. USSR author's certificate № 121083, cl. F 16K 31/28, 1957. 2. USSR author's certificate L 359477, cl. F 16K 24/00, 1970.