KR-102962279-B1 - Condensated water drain valve assembly for air compressor

Abstract

The present invention relates to a condensate drain valve assembly for an air compressor, and more specifically, to a condensate drain valve assembly for an air compressor that is arranged to communicate with the lower part of an air tank in which compressed air is stored, and automatically drains condensate formed by the condensation of moisture remaining in the compressed air stored in the air tank, thereby preventing the phenomenon of condensate being mixed into the compressed air and ejected, and preventing damage such as corrosion of the air tank caused by condensate.

Inventors

• 최진호

Dates

Publication Date

20260507

Application Date

20240628

Claims (3)

1. A valve housing having a water storage space that is connected to a drain port formed at the bottom of an air tank constituting an air compressor and stores condensate drained from the air tank through the drain port; One or more hollow valve seats formed vertically penetrating the bottom of the water reservoir space formed in the valve housing; and It includes a floating valve that is arranged in a lifting structure on each of the above valve seats and moves up and down according to the water level of the condensate stored in the water storage space to open and close the valve seat. The above floating valve is configured such that a lifting valve shaft is positioned at the bottom of a floating body that rises along a valve seat to open and close the valve seat, and the above floating valve is composed of a buoyancy body that rises in the condensate due to a difference in specific gravity with the condensate. A magnetic member emitting permanent magnetism is disposed on a floating valve arranged in a lifting structure on each of the above valve seats, and a magnetic fixing piece made of a ferromagnetic body that magnetically couples with the permanent magnetism emitted from the magnetic member is disposed in a lifting structure on the bottom surface of the valve housing. A condensate drain valve assembly for an air compressor, characterized in that the floating valve is configured to be in close contact with the bottom surface of the water storage space by means of a magnetic coupling force formed between the magnetic member and the magnetic fixing piece, thereby forming a stable sealing state of the valve seat.
2. delete
3. A condensate drain valve assembly for an air compressor according to claim 1, wherein the valve seat and the lifting/closing shaft of a floating valve disposed in a lifting structure on the valve seat are configured with a shape that is wider at the top and narrower at the bottom, such that the outer diameter surface of the lifting/closing shaft and the inner diameter surface of the valve seat are in close contact with each other in an inclined surface structure, thereby increasing the contact area between the valve seat and the lifting/closing shaft to close the valve seat.

Description

Condensated water drain valve assembly for air compressor The present invention relates to a condensate drain valve assembly for an air compressor, and more specifically, to a condensate drain valve assembly for an air compressor that is arranged to communicate with the lower part of an air tank in which compressed air is stored, and automatically drains condensate formed by the condensation of moisture remaining in the compressed air stored in the air tank, thereby preventing the phenomenon of condensate being mixed into the compressed air and ejected, and preventing damage such as corrosion of the air tank caused by condensate. As is well known, an air compressor is a means for a compressor operated by a motor to draw in external air and continuously supply it to an air tank, thereby filling the air tank with compressed air at a desired pressure, and exhausting the compressed air filled in the air tank through an exhaust pipe. A pressure gauge and a pressure sensing switch are connected to the piping communicating with the interior of the air tank. When a certain pressure is reached, the pressure sensing switch turns "off" to cut off the power supplied to the motor, and when the pressure of the air tank drops below a certain pressure, the pressure sensing switch turns "on" to supply power to the motor. Thus, while power is supplied to the motor, a certain pressure range is always maintained in the air tank. Meanwhile, the external air sucked into the air compressor contains a small amount of moisture, and during hot and humid periods, it contains a large amount of moisture. When the residual air is filled into the air tank in a compressed state, condensed water is formed inside the air tank. Such condensation not only causes damage such as corrosion to the air tank itself, but also becomes a major factor in shortening the lifespan of various pneumatic devices that operate by receiving compressed air through the exhaust pipe. Accordingly, in large-scale industrial sites, it is composed of an air compressor, air dryer, air filter, etc., and when supplying air filled in an air tank in a compressed state to pneumatic equipment through an exhaust pipe, it removes moisture remaining in the said filled air, or A so-called cooling method is mainly used in which compressed air exhausted through the exhaust pipe of the above-mentioned air compressor is cooled using a cooling system to condense moisture and then discharged to the outside. However, these conventional cooling methods require a large number of parts, resulting in high costs and the additional problem of requiring significant attention to maintenance, making them difficult to apply in small-scale workshops. Meanwhile, Korean registered utility model publications No. 20-0292474 and No. 20-0299725 disclose a method for automatically discharging condensate at regular intervals using a solenoid, but this has the disadvantage of increasing the unit cost of the product due to additional electrical equipment and having a high failure rate. As another method, there is a configuration in which a float rises to automatically discharge water as the water level collected inside the main body of the drain unit increases; however, when oil or foreign substances are mixed in, the float installed inside the main body often fails to operate properly, making it impossible to discharge water to the outside. FIG. 1 shows a state in which a condensate drain valve assembly for an air compressor, proposed as a preferred embodiment of the invention, is placed in the pressure tank of an air compressor. FIGS. 2 and 3 show the detailed configuration of a condensate drain valve assembly for an air compressor proposed as a preferred embodiment of the present invention, and FIG. 3 is an operational diagram showing the discharge state of condensate through a condensate drain valve assembly for an air compressor proposed as a preferred embodiment of the present invention. Hereinafter, a condensate drain valve assembly for an air compressor, proposed as a preferred embodiment of the present invention, will be described in detail with reference to the attached drawings. FIG. 1 shows the state in which a condensate drain valve assembly for an air compressor, proposed as a preferred embodiment in the invention, is placed in the pressure tank of an air compressor, FIG. 2 and FIG. 3 show the detailed configuration of the condensate drain valve assembly for an air compressor, proposed as a preferred embodiment in the present invention, and FIG. 3 is an operational state diagram showing the discharge state of condensate through the condensate drain valve assembly for an air compressor, proposed as a preferred embodiment in the present invention. The condensate drain valve assembly (1) for an air compressor proposed as a preferred embodiment in the present invention automatically drains residual condensate from the air tank (100) constituting the air compressor to the outside, thereby preventi