Large-aperture three-way sealed switching valve

Abstract

The invention discloses a large-aperture three-way sealed switching valve which comprises a valve body and a valve component, wherein the valve component is matched with the valve body; the valve component is arranged at an air flow through hole inside the valve body; the valve component comprises a driving rotating shaft as a valve component driving shaft, two driven rotating shafts which are driven by the driving rotating shaft to rotate, and blades which are respectively arranged on the driving rotating shaft and the driven rotating shafts; the driving rotating shaft and the driven rotating shafts are arranged in an inverted triangular manner; the driving rotating shaft and the driven rotating shafts are connected through linkage strips; the driving rotating shaft drives the driven rotating shafts to rotate through the linkage strips; sealing strips are arranged inside the valve body; the sealing strips are arranged at the air flow through hole inside the valve body; the shapes of the sealing strips are matched with those of the blades; the sealing strips are used for sealing gaps between the valve body and the blades. As two valves are integrated into one switching valve, the cost of the valves is reduced, the on-site space is saved, and moreover the phenomenon of interfered 'air flow collision' caused when two fans are switched to operate can be avoided.

Description

technical field [0001] The invention relates to the field of dust removal air pipes or process exhaust systems, in particular to a large-diameter three-way airtight switching valve. Background technique [0002] The commonly used ventilation fan switching generally adopts the structure of the four-way type of the air outlet and the "Y" bypass type of the air inlet. In the art exhaust system, a pipeline system will use two fans as the power. The common practice is to connect the outlets of the two fans to a large-diameter horizontal pipe and then discharge them from the same chimney. The outlet of the fans is To avoid pipeline vibration, a soft connection is first connected and then a check valve is connected to prevent airflow from flowing backward. [0003] The above method has the following problems: [0004] (1) The air outlets of the two fans are connected to the same pipeline. When switching is required, the frequency of the active fan gradually decreases, and the fre...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the above problems existing in the prior art and provide a large-diameter three-way airtight switch valve. The present invention integrates two valves into one switch valve, which not only saves the cost of the valve, saves the site space, and Solve the phenomenon of "grabbing the wind" where two fans interfere with each other when switching actions

Images