Aerosol virtual impact concentrating separator

Abstract

The invention relates to an aerosol virtual impacting concentration separator which is characterized in that the separator comprises an outer drum; one side of the lower part of the outer drum is provided with an exhaust port and an exhaust fan which is connected with the exhaust end of the exhaust port; the outer drum is internally provided with three stages of separation inlet components from top to bottom; the first stage component comprises an aerosol air intake, the front end of the first stage component is provided with a waterproof and inset resistant net cover, the first stage component is internally provided with a flow limit column and a ring gap is arranged between the flow limit column and the first stage component; the second stage component comprises a large particle collection port and a second stage separation intake board, the large particle collection port is correspondingly arranged under the aerosol air intake and a plurality of second stage spouts are cut evenly at the periphery of the second stage separation intake board; the third stage component comprises a tank which is connected under the second stage separation intake board, the third stage spouts are cut at the bottom of the tank and a third stage collection port is arranged under the third stage spouts. By utilizing the flying inertia of aerosol particle and adopting the virtual impacting principle, the separator of the invention separates the respirable particle with the diameter of 2 microns to 12 microns, which contains microorganism, from great air flow and concentrates the respirable particle to comparatively small air flow.

Description

technical field [0001] The invention relates to a separator, in particular to an aerosol virtual impingement concentration separator used for the concentration and separation of biological aerosols in the atmosphere. Background technique [0002] Since the anthrax attack on the U.S. Postal Service in 2001 and the sarin nerve gas attack on the Tokyo subway system in 1995, countries have attached great importance to nuclear, biological and chemical terrorist attacks, and have deployed a large number of biochemical monitoring and detection systems in sensitive urban areas. The alarm system for real-time monitoring of potentially dangerous airborne particles can be used not only for the military and society to prevent attacks by weapons of mass destruction, but also for the monitoring of nuclear, biological and chemical aerosols in peacetime. The particle size of the aerosol is generally 0.001-100 microns, and particles above 50 microns are difficult to enter the human respirato...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the most common existing virtual impingement structure is a pair of conical acceleration nozzles and receiving ports with truncated tops. Generally, multiple sets of such paired accelerating nozzles and receiving ports are required in the front stage of the enrichment separator. The spatial distribution of multiple sets of paired acceleration jets and receiving ports is generally axisymmetric or planar. This structure makes the virtual impingement concentration separator difficult to process, large in volume and weight, and inconvenient for miniaturization.

Images