Fire hydrant assembly with check valve

Abstract

The present invention relates to a hydrant assembly having a check valve, which has an improved structure to simplify the replacement of a check valve embedded underground. A female screw hole (21) is formed in the curved part of an elbow pipe (20) of the hydrant assembly having the check valve. A check valve (80) is detachably coupled to the female screw hole (21). The hydrant assembly comprises a protection pipe (200) and an air valve (90). The top end of the protection pipe (200) is coupled to the top end of the elbow pipe (20), and the bottom end is located under the check valve (80) to protect the check valve (80) from buried soil. The air valve (90) is opened and closed to exhaust or inhale air between a fixing pipe (30) and a lifting pipe (40).

Description

technical field [0001] The present invention relates to a fire hydrant assembly with a check valve, in particular to a fire hydrant assembly that simplifies the replacement of the check valve buried underground and prevents the check valve from being sealed by landfill soil. A fire hydrant assembly with a check valve whose structure is improved by means of blocking phenomenon. Background technique [0002] The present invention relates to an improvement of the fire hydrant assembly disclosed in Korean Patent Registration No. 10-0949366. The fire hydrant assembly disclosed in Korean Patent Registration No. 10-0949366 is as follows: Figure 1a As shown, if the water control valve (gatevalve) 70 is opened, the riser pipe 40 will rise due to the hydraulic pressure of the fire-fighting water, and the fire-fighting water will be sprayed. The fire-fighting water inside the elbow pipe) 20 and the riser pipe 40 is discharged to the outside through the check valve 80 . [0003] When...

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Problems solved by technology

[0004] However, the disclosed invention creates the following situation: If Figure 1b and Figure 2b As shown, the check valve 80 is in the form of being welded and fixed to the elbow 20, and the check valve 80 is blocked due to the flow of impurities into the check valve 80, thereby becoming inoperable.

[0005] In this case, in order to replace the check valve 80, it is necessary to dig and dig the buried elbow 20 and the fixed pipe 30.

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