Online operation sealing device with double-layer sealing function for air pipe

Abstract

The invention discloses an on-line operation sealing device with a double-layer sealing function for an air duct, the on-line operation sealing device is used for connecting an air inlet pipe and an air outlet pipe, the on-line operation sealing device comprises a shell, an adjusting device and a flow guiding device, two ends of the shell are respectively communicated with the air inlet pipe and the air outlet pipe, the shell is connected with the adjusting device, the flow guiding device is movably connected with the shell, and the shell is connected with the adjusting device. The shell comprises a fixed seat and a mounting seat, a mounting groove is formed in the fixed seat, one end of the mounting seat is inserted into the mounting groove, a clamping groove is formed in the fixed seat, one end of the air inlet pipe is inserted into the clamping groove, one side of the mounting seat is fixedly connected with the air outlet pipe, one end of the fixed seat is inserted into an outlet of the air inlet pipe, and a negative pressure flow channel is formed in the fixed seat; the negative pressure flow channel is communicated with the sealing cavity, the flow guiding device comprises a sealing ring, the sealing ring is arranged in the sealing cavity, the sealing cavity is arranged in a quincunx shape and is sealed through the sealing ring, the sealing cavity is designed in the quincunx shape, sealing wedge faces are added, and the air-tight sealing performance is improved.

Description

technical field [0001] The invention relates to the technical field of air duct connection, in particular to an on-line operation sealing device with double-layer sealing function for air ducts. Background technique [0002] In recent years, with the continuous development of the machinery industry, more and more instruments are developing towards high precision, and the air duct as the fluid medium transmission carrier is no exception. By adding a sealing device at the connection of the air duct, the connection is sealed. [0003] However, most of the existing air ducts are connected by bolts, and a sealing ring is added to seal the connection. It is easy to cause the aging of the sealing ring, greatly reducing the service life of the sealing ring, poor reliability and increasing the transportation cost. [0004] In addition, adding a sealing ring between the connected pipes will cause a surface to be sealed between the sealing ring and the pipes on both sides. It is neces...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to add a detection device at the connection point of the pipeline to test the sealing performance, especially when transporting harmful substances such as pollutants and chemicals. Once the seal fails, dangerous goods will leak, which will cause harm to the surrounding environment and operators. , affecting the safety of transportation

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