Self-suction type inverted bucket type drain valve

Abstract

The invention discloses a self-suction type inverted bucket type drain valve. The self-suction type inverted bucket type drain valve comprises a valve body, wherein a gas-liquid separation cavity, a steam inlet channel and a liquid outlet channel are formed in the valve body; a rotating arm is arranged at the bottom of the liquid outlet channel; the rotating arm is rotationally connected with an inverted bucket; the inverted bucket covers the steam inlet channel; a valve element is arranged on the rotating arm; the inverted bucket ascends and descends to enable the valve element to block or open the liquid outlet channel; a conical guide section, a spraying area and a vacuum chamber are sequentially arranged on the steam inlet channel in the steam flowing direction; the vacuum chamber is connected with a self-suction channel; a one-way valve is arranged on the self-suction channel; and the self-suction channel is connected with a water container. According to the self-suction type inverted bucket type drain valve, when condensate water in the valve body is flashed into steam, the steam flow speed is remarkably increased, when the steam rapidly passes through the conical guide section, the spraying area and the vacuum chamber, large suction force is generated in the vacuum chamber, water in the water container is sucked into the vacuum chamber and enters the valve body to rapidly form water seal, leakage and waste of a large amount of steam are prevented, and energy conservation and emission reduction are facilitated.

Description

technical field [0001] The invention belongs to the technical field of drain valves, in particular to a self-priming inverted bucket drain valve. Background technique [0002] Steam traps, also known as automatic drains or condensate drains, are mainly used in steam systems to drain condensate. The inverted bucket trap is a commonly used steam trap. Inside the inverted bucket trap is an inverted bucket as a liquid level sensitive part. The opening of the bucket is downward, and the connecting lever of the inverted bucket drives the valve core to open and close the valve. When the device is just started, air and low-temperature condensed water in the pipeline enter the trap, and the inverted bucket falls by its own weight. The lever connected to the inverted bucket drives the valve core to open the valve, and the air and low-temperature condensed water are quickly discharged. When steam enters the inverted bucket, the steam in the inverted bucket generates upward buoyancy, a...

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Problems solved by technology

In actual use, due to the high temperature of the condensed water in the valve body, when the steam temperature is too high, some condensed water inside the valve body will flash into steam, the inverted bucket loses buoyancy and sinks, and leaks quickly through the outlet Steam, until sufficient condensed water enters the valve body to form a water seal again, can prevent steam leakage and waste, which is not conducive to energy saving and emission reduction

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