Automatic liquid-retarding air bleeder

Abstract

The invention discloses a device called 'automatic liquid resistance air vent valve', which is capable of automatically distinguishes the differences of the suction forces generated by air flow and liquid flow. When the device is used to discharge the accumulated air inside a liquid storage or circulating system, gas is only allowed to flow out, and when encountering the liquid, the valve is automatically closed, thereby preventing the liquid discharging. The device is specifically applied in a hot water heating system, when venting is required, a manual pipe plug (4) is loosed, then the gas flows out passing by a side through hole (1-1) and a vent hole (1-2), as the suction force generated by the gas flow is weak and is provided with spring resistance opposite to the suction force, system internal pressure is incapable of propelling a valve core (2) in motion, further the valve core stays at a core open position (2-2), and the pas passing a J-shaped hole (4-3) smoothly flow out. After the gas finishes discharging and when water flows through, the water flow generates more powerful suction force which is combined with the system internal pressure to compress a spring (3), and to enable the valve core (2) to move toward a low pressure area, then a core tip (2-3) encloses the side through hole (1-1) and the vent hole (1-2), and thereby the hot water is completely prevented from discharging ( see in the attached drawing).

Description

[0001] The invention discloses a device called "automatic liquid blocking and deflation valve" (hereinafter referred to as "liquid blocking valve"), which is used in a liquid circulation system or storage system (hereinafter referred to as "system"), and can only allow the The gas is discharged, and the automatic valve that closes automatically when encountering liquid. 1. Technical field [0002] If there is a certain amount of gas accumulated inside the system, it will cause gas resistance, which will affect the normal circulation of the liquid. For example, in a hot water heating system, there is air in the pipelines, equipment and water, and the resulting air resistance will affect the heating. It is necessary to let off the gas to make the hot water circulate normally and the heat dissipation be uniform. However, the old-fashioned air release valve (also known as the air release button) can release water at the same time as the air release, causing the water loss from the...

AI Technical Summary

Problems solved by technology

[0003] There are already many kinds of air release valves. The most common ones are straight-through valves that can release air and water completely by manual operation. Some "automatic air release valves" mostly use the principle of buoyancy, or their performance is unstable. Either the cost is too high, or it can only be installed on the top of the system, and it can really meet the actual needs - there is no one that can "only exhaust and not liquid" when installed in any position. For this reason, we are summarizing the predecessors Based on the experience and deficiencies, research and invention of the "liquid blocking valve" device

Images