Importance

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Abstract

A secondary cyclone separation dust cup for dust collectors includes a separator. An inner barrel body is coaxially disposed in an outer barrel body of the separator. An air inlet for inner barrel body is formed in an upper portion of the inner barrel body above air inlets for separator, tangent to a peripheral wall of the inner barrel body. A top of the inner barrel body is connected with a connecting support and a lower portion thereof passes through an isolation cover. An air inlet for dust cup is connected with an air outlet for dust cup through the air inlets for separator and the air inlet for inner barrel body. A conical barrel body with a large upper portion and a small lower portion is disposed on an inner wall of the inner barrel body, and an isolation bag is mounted below a bottom of the conical barrel body. A peripheral wall of the isolation bag is connected with an outer wall of the conical barrel body via a connecting band and there is an annular gap between an inner wall of the isolation bag and the outer wall of the conical barrel body. The present invention has a simple structure, low manufacture costs and a remarkable separation effect. Dust all can fall on the bottom of the dust cup after secondary cyclone separation, so the dust can be dumped and cleaned up conveniently. The present invention can also effectively avoid the flow reversal phenomenon of small dust when dust collectors are restarted after work intermission.

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First Claim