Sealed negative pressure box drainage device

• Main Authors: CHEN YI, TAN JIONG, LI XIAOHONG, HUANG PENG, LI JIAWEI
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

A drainage device for a sealed negative pressure box comprises the sealed negative pressure box, the sealed negative pressure box comprises a negative pressure fan and a sealed box body, the negative pressure fan is arranged on the front side face of the sealed box body, and a condensation drainage pipe is arranged at the bottom of the sealed negative pressure box body; the device body is of a semi-open tank structure, a central water pipe is arranged at the top end of the device body, the distance between the bottom of the central water pipe and the bottom of the device body is 2-3 cm, a drainage pipeline is arranged on the side face of the device body, and a drainage opening of the drainage pipeline is higher than the bottom of the central water pipe. A pressure system of a condensation drain pipe is divided into two systems through a water seal formed by the device body, and the balanced water seal of the whole set of drain pipe in the original design is changed into two systems through the pressure differ