Anti-blocking type drum screen with secondary screening device

Abstract

The invention relates to the technical field of screening equipment, in particular to an anti-blocking type drum screen with a secondary screening device. The anti-blocking type drum screen mainly consists of a rack, a drum screen body, a rotary motor, a rotary shaft, an outer cover, a charge hole formed in one end of the outer cover, a waste discharge hole formed in the other end of the outer cover, anti-blocking devices and the secondary screening device positioned at the lower end of the outer cover; the drum screen body and the horizontal plane are arranged on the rack at an angle of 5-10 degrees; the rotary shaft is inserted into the drum screen body; one end of the rotary shaft passes through the drum screen body and is connected with the rotary motor; the outer cover covers the outer side of the drum screen body; and the plurality of anti-blocking devices are uniformly arranged on the outer surface of the outer cover. After adopting the structure, the screen can be cleared at fixed time by virtue of a pulse type air cannon, so that manual clearing trouble is avoided in case of not affecting using efficiency of the drum screen body, and therefore, labor intensity is reduced; and the secondary screening device can be utilized to further screen materials, and materials in precise proportion are obtained by virtue of a collecting and mixing regulating plate, so that the utilization efficiency of the drum screen body is improved.

Description

technical field [0001] The invention relates to the technical field of screening equipment, in particular to an anti-blocking drum screen with a secondary screening device. technical background [0002] The trommel screen is mainly a device for screening and separating solid materials. The materials entering the trommel screen are turned and rolled along with the rotation of the screen drum. The qualified materials are discharged through the discharge port at the bottom of the screen drum, and the unqualified materials are screened. The discharge port at the end of the barrel is discharged. In the construction industry, trommel screen is one of the essential equipment. Operators will screen the dry sand, and the screened dry sand is generally between 0 and 5mm, and generally will not be further screened. In the construction industry, various dry sands with different ratios are often required. Later, researchers further improved the trommel sieve, and set sieve holes of dif...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the existing trommel screen still has great defects in the structure and design of the screening device and anti-blocking device, which cannot meet the needs of the modern construction industry.

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