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Drum coating, fluidized drying and film-forming system for water-based resin-coated slow-release fertilizer
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A fluidized drying, film-coated slow-release technology, used in layered/coated fertilizers, fertilizer mixtures, solid/semi-solid fertilizers, etc. problem, to achieve the effect of no wall hanging, sufficient coating, and smooth surface
Pending Publication Date: 2021-04-09
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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[0008] Aiming at the problems of poor coating uniformity and integrity, easy cracks, large pores, rough surface and hanging on the wall existing in the existing drum coating machine, it is impossible to fundamentally solve the defects of coating quality. The present invention provides a Water-based resin-coated slow-release fertilizer drum coating fluidized drying film-forming system
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Embodiment 1
[0047] A water-based resin-coated slow-release fertilizer drum coating fluidized drying film-forming system, the structure is as follows figure 1 , figure 2 As shown, it includes feed bin 1, feed elevator 2, metering scale, countercurrent coating drum 3, fluidized drying film-forming bed 7, dischargeelevator 8 and discharge bin 9, feed bin 1 and inlet The material hoist 2 is connected, the feed hoist 2 is connected with the metering scale, the metering scale is connected with the feed port of the countercurrent coating drum 3 through the conveying pipeline, and the discharge port 6 of the countercurrent coating drum is connected with the fluidized drying process. The feeding bin of the film bed 7 is connected, the outlet port 15 of the fluidized drying film-forming bed is connected with the discharge elevator, and the discharge elevator is connected with the discharge bin.
[0048] The counter-flow coating drum includes a coating cylinder with heads at both ends, a pressure...
Embodiment 2
[0054] With the water-based resin-coated slow-release fertilizer described in Example 1, the drum coating fluidized drying film-forming system differs in that:
[0055] The number of overflow rings is 6, which surround the inner wall of the coated drum for a week, and the height of the overflow ring is 8cm.
[0056] The coating drum is in an inclined state and the discharge end is higher than the feed end, and the inclination angle of the coating drum is 8°; the width of the spiral belt is 5cm, and the pitch of the spiral belt is 45cm.
[0057] An included angle of 50° is formed between the air distribution holes on the air distribution plate and the axial direction of the fluidization chamber.
Embodiment 3
[0059] With the water-based resin-coated slow-release fertilizer described in Example 1, the drum coating fluidized drying film-forming system differs in that:
[0060] The number of overflow rings is 6, and the height of the overflow ring is 6cm around the inner wall of the coated drum.
[0061] The coating drum is in an inclined state and the discharge end is higher than the feed end, and the inclination angle of the coating drum is 12°; the width of the spiral belt is 85cm, and the pitch of the spiral belt is 50cm.
[0062] The air distribution holes on the air distribution plate form an included angle of 75° with the axial direction of the fluidization chamber.
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Abstract
The invention relates to a drum coating, fluidized drying and film-forming system for a water-based resin-coated slow-release fertilizer. The drum coating, fluidized drying and film-forming system comprises an inclined countercurrent coating drum and a fluidized drying and film-forming bed in butt joint with a discharge port of the countercurrent coating drum, wherein a coating cavity is formed in the coating drum; the coating cavity is sequentially divided into three functional areas including a fertilizer heating area, a coating area and a pre-drying area from feeding end to discharging end, and an overflow ring protruding out of the inner wall of each functional area is arranged on the inner wall; the coating drum is in an inclined state, the discharging end of the coating drum is higher than the feeding end of the coating drum; a continuous spiral belt used for pushing materials is arranged on the inner wall of the coating drum; and the fluidized drying and film-forming bed is a fluidized drying and film-forming bed with three stages connected in series. The coating of the system is carried out in the countercurrent coating drum, and drying and film forming are carried out in the fluidized drying and film-forming bed, so independent control can be realized; and the system has the outstanding advantages of low energy consumption, high yield and high productivity.
Description
technical field [0001] The invention relates to a drum coating fluidized drying film-forming system for water-based resin-coated slow-release fertilizers, belonging to the technical field of fertilizer production equipment. Background technique [0002] With the rapid development of society and people's unremitting pursuit of increasing production, the amount of chemical fertilizers has increased rapidly, resulting in a corresponding decline in fertilizer utilization, resulting in serious waste of fertilizer resources and serious environmental pollution. A large number of studies have shown that the most effective way to improve the utilization rate of fertilizers is to coat fertilizers to slowly release the available nutrients applied to the soil and prolong the fertilizer efficiency. Therefore, a fertilizer coating machine is derived. [0003] Most of the existing fertilizer coating machines are drum coating machines. Its original purpose is to effectively prevent fertiliz...
Claims
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Application Information
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IPC IPC(8): C05G5/30C05G5/12C05G3/30
CPCC05G5/38C05G5/12C05G3/30
Inventor 林海涛林思源刘兆辉沈玉文宋效宗刘苹石璟王江涛
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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