| 摘要 |
The present invention relates to a zero point adjusting method of a filling pressure indicator for a pressure accumulation type fire extinguisher, and the purpose of the present invention is to provide the filling pressure indicator for a pressure accumulation type fire extinguisher, which can easily control a zero point by forming a groove on a rotary plate integrally rotating with a bourdon tube, and rotating the rotary plate with a tool having a shape insertable into the rotary plate. More specifically, the zero point adjusting method of a filling pressure indicator for a pressure accumulation type fire extinguisher is characterized in that the center of the bourdon tube wound like a spring is fixed to a bottom connection tube of a bottom fixing plate, and a pointer is coupled to the end of the bourdon tube so that the bourdon tube is unwound or wound in accordance with pressure variation, and thus the pointer points the value of pressure indicated on a position spaced apart at a fixed distance in a circumferential direction based on the bourdon tube. In this regard, a top end of a hollow body-shaped adapter penetrates a through hole formed on the center of the bottom fixing plate and protrudes from the top of the bottom fixing plate to be fixed thereto, the protruding top end of the adapter penetrates a center hole of a disk ring-shaped rotary plate and extensionally protrudes from the top of the rotary plate, and the rotary plate is not separated by pivoting around the adapter. Also, the bottom connection tube of the bourdon tube is combined by penetrating a hollow hole of the adapter from top to bottom so that the pointer of the bourdon tube indicates the value of pressure, and the the bottom connection tube is coupled to the inner radius of the hollow hole of the adapter with an interference fit. In addition, if the rotary plate rotates, the bottom connection tube, which is inserted into the center hole of the rotary plate along with the adapter, and the bourdon tube, which is fixed to the bottom connection tube, rotate together. Accordingly, a zero point is adjusted by making the pointer of the bourdon tube correspond with the zero point indicated on the top surface of the bottom fixing plate. |
