Drum screen

Abstract

The invention relates to the technical field of kitchen garbage treatment, and discloses a drum screen. The drum screen comprises a supporting frame, a drum body, a screen cover and a blowing mechanism, wherein the drum body is obliquely and rotatably arranged on the supporting frame, an feeding hole of the drum body is higher than an discharging hole of the drum body, and a driving mechanism fordriving the drum to rotate relative to the supporting frame is arranged on the supporting frame; the screen cover is arranged on the supporting frame and is connected with the drum body in a sleevingmode; and the blowing mechanism is arranged at the position of the feeding hole and is arranged to blow air from the feeding hole to the discharging hole. By using the blowing mechanism, light materials can be blown into the tail part of the drum body in the drum body in the running direction of materials, heavy materials (organic matters and bulk inorganic matters) rotate along the drum body in the drum body and is output from the tail part of the drum body, the materials (the organic matters) being less than screen holes of the drum body fall into the lower part through the screen holes, andthe materials (the bulk inorganic matters) being larger than the screen holes are output from the tail part through the rotation of the drum body; and the effect of two times of sorting is realized through one time of sorting, the sorting rate and the screening purity of organic garbage are greatly improved, and the sorting effect is ensured.

Description

technical field [0001] The invention relates to the technical field of kitchen waste treatment, in particular to a drum screen for screening kitchen waste. Background technique [0002] In the process of recycling kitchen waste, domestic waste needs to be screened into organic matter and inorganic matter, and the inorganic matter is mainly plastic. [0003] The previous drum sieve equipment can only screen out the undersize through the sieve holes during the sorting process, and the undersize is mainly organic matter. The existing trommel screen has the following defects: [0004] 1. Due to the physical limitations of the sieve holes, the undersize contains plastics with small particle sizes, and the sorting effect is limited; [0005] 2. The existing drum screen adopts integral screen or spliced ​​screen. When the screen is damaged, the cost of maintenance and replacement is high, and it needs to be replaced as a whole, which is difficult; [0006] 3. In the process of s...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the physical limitations of the sieve holes, the undersize contains plastics with small particle sizes, and the sorting effect is limited;

[0005] 2. The existing drum screen adopts integral screen or spliced ​​screen. When the screen is damaged, the cost of maintenance and replacement is high, and it needs to be replaced as a whole, which is difficult;

[0006] 3. In the process of sieving organic matter in the existing drum sieve, there are plastics and other winding sieve holes, resulting in a decrease in sieving capacity;

[0007] 4. Existing trommel screen equipment only has a horizontal lifting plate in addition to the bag breaking knife in the cylinder body, resulting in the inability of the material to roll effectively in the cylinder body or accumulation of material during the rolling process;

[0008] 5. The transmission device mostly adopts chain transmission or a single set of friction wheel transmission, resulting in frequent chain maintenance and high cost of friction wheel replacement, which affects production, or the manufacturing is too simple and easy to cause glue opening;

[0009] 6. During the production process of the equipment, the downward movement of the cylinder depends on the positioning of the tire belt and the supporting roller to speed up the glue opening and wear of the supporting roller;

[0010] 7. The existing trommel sieve cover cannot solve the problem of material leakage due to the sealing between the trommel and the rotating cylinder

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