Organic fertilizer preparation system

Abstract

An embodiment of the present invention provides an organic fertilizer preparation system comprising: a pellet preparation module for preparing fertilizer pellets from a plurality of hoppers storing different raw materials; and a fertilizer processing module for processing the fertilizer pellets supplied from the pellet preparation module, and thereby preparing an organic fertilizer, wherein a fertilizer processing unit provided in the fertilizer processing module is configured to prepare the organic fertilizer such that a granular fertilizer, a coated granular fertilizer, a pellet fertilizer and a coated pellet fertilizer are selectively prepared.

Description

Organic fertilizer manufacturing system

[0001] The present invention relates to an organic fertilizer manufacturing system, and more particularly, to an organic fertilizer manufacturing system configured to conveniently manufacture organic fertilizer in various forms.

[0002] Fertilizer is a nutrient that enriches the soil and promotes the growth of crops and plants.

[0003] Chemical fertilizers (inorganic fertilizers) are used to increase crop productivity. While these chemical fertilizers can promote rapid growth of crops, they also pose the problem of soil acidification and salt contamination due to salt accumulation. This salt contamination inhibits the growth of microorganisms, the ultimate decomposers.

[0004] Accordingly, organic fertilizers are being proposed as a replacement for chemical fertilizers. Organic fertilizers contain organic compounds that ionize inorganic salts in the soil, allowing them to be easily absorbed by crops. These organic fertilizers can improve soil quality by alleviating salt accumulation in cultivated soils.

[0005] However, using livestock waste, organic waste, or plant matter as raw materials for organic fertilizers presents challenges in storage and use. Therefore, organic fertilizers are manufactured and used in solidified form.

[0006] Accordingly, various research and development are being conducted on organic fertilizer manufacturing systems that enable the easier production of solidified organic fertilizers.

[0007] The technical task of the present invention to solve the above problems is to provide an organic fertilizer manufacturing system that can easily manufacture organic fertilizer in various forms.

[0008] In order to achieve the above technical task, one embodiment of the present invention provides an organic fertilizer manufacturing system, including a pellet manufacturing module for manufacturing fertilizer pellets from a plurality of hoppers storing different raw materials; and a fertilizer processing module for manufacturing organic fertilizer by processing the fertilizer pellets supplied from the pellet manufacturing module, wherein a fertilizer processing unit provided in the fertilizer processing module manufactures the organic fertilizer, and is configured to selectively manufacture granule fertilizer, coated granule fertilizer, pellet fertilizer, and coated pellet fertilizer.

[0009] In one embodiment of the present invention, the fertilizer processing unit may include a cylindrical rotating housing having an inlet for introducing the fertilizer pellets supplied from the pellet manufacturing module at one end and an outlet for discharging the organic fertilizer that has been selectively processed at the other end; a mixing blade provided at predetermined intervals along the circumferential direction and the longitudinal direction of the cylindrical rotating housing; a coating solution supply unit coupled to one end of the cylindrical rotating housing and spraying a coating solution into the interior of the cylindrical rotating housing; a hot air supply unit coupled to one end of the cylindrical rotating housing and supplying hot air into the interior of the cylindrical rotating housing; and an operation control unit for controlling the operation of the coating solution supply unit and the hot air supply unit.

[0010] In one embodiment of the present invention, the operation control unit can spray the required microbial coating solution onto the fertilizer pellets through the operation control of the coating solution supply unit to coat the outer surface of the organic fertilizer with microorganisms.

[0011] In one embodiment of the present invention, the operation control unit can control the temperature and intensity of the hot air supplied to the fertilizer pellets through the operation control of the hot air supply unit, thereby producing the organic fertilizer having a required shape.

[0012] In one embodiment of the present invention, the coating solution supply unit includes: each coating solution tank containing a different microbial coating solution; a spray nozzle disposed in a processing space within the cylindrical rotating housing containing the fertilizer pellets and spraying the microbial coating solution supplied from the coating solution tank into the processing space; and a metering pump connected to the coating solution tank and supplying the microbial coating solution contained in the coating solution tank to the spray nozzle; and the operation control unit may be configured to control the supply of the microbial coating solution supplied from each of the coating solution tanks to the spray nozzle.

[0013] In one embodiment of the present invention, the spray nozzle is disposed on one end side of the cylindrical rotating housing, and the length of the spray nozzle may be 1 / 3 or less of the length of the cylindrical rotating housing.

[0014] In one embodiment of the present invention, the pellet manufacturing module includes a quantitative dispenser that supplies raw materials to a plurality of hoppers that store different raw materials; a crusher that crushes raw materials supplied from the hoppers; a mixer that mixes raw materials crushed from the crusher; a steamer that supplies moisture to the raw materials mixed from the mixer; and a molding machine that molds the raw materials supplied from the steamer into the fertilizer pellets; and the fertilizer processing module may further include a blower that cools the organic fertilizer manufactured from the fertilizer processing unit; and a packaging machine that packages the organic fertilizer supplied from the blower.

[0015] The effects of the organic fertilizer manufacturing system according to the present invention described above are as follows.

[0016] According to the present invention, the fertilizer processing unit can produce various types of organic fertilizers. For example, the fertilizer processing unit can selectively produce organic fertilizers such as granular fertilizer, coated granular fertilizer, pellet fertilizer, and coated pellet fertilizer.

[0017] Since this fertilizer processing unit can manufacture various types of organic fertilizers with a single device, the configuration and operation process of the organic fertilizer manufacturing system can be simplified.

[0018] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0019] FIG. 1 is a schematic diagram showing an organic fertilizer manufacturing system according to one embodiment of the present invention.

[0020] FIG. 2 is an exemplary diagram showing a molding machine with an external housing closed according to one embodiment of the present invention.

[0021] FIG. 3 is an exemplary diagram showing a molding machine with an open outer housing according to one embodiment of the present invention.

[0022] Figure 4 is a configuration diagram of a fertilizer processing unit according to one embodiment of the present invention.

[0023] Figure 5 is a schematic diagram illustrating a fertilizer processing unit according to one embodiment of the present invention.

[0024] Figure 6 is an example of the AA cross-section of Figure 5.

[0025] Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms and is therefore not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar parts have been designated with similar reference numerals throughout the specification.

[0026] Throughout the specification, when a part is said to be "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with other elements intervening. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that the other components may be included, unless otherwise specifically stated.

[0027] In the present invention, upper and lower parts mean being located above or below the target member, but do not necessarily mean being located above or below with respect to the direction of gravity.

[0028] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0029] FIG. 1 is a schematic diagram showing an organic fertilizer manufacturing system according to an embodiment of the present invention, FIG. 2 is an exemplary diagram showing a molding machine with an external housing closed according to an embodiment of the present invention, FIG. 3 is an exemplary diagram showing a molding machine with an external housing open according to an embodiment of the present invention, FIG. 4 is a schematic diagram of a fertilizer processing unit according to an embodiment of the present invention, FIG. 5 is a schematic diagram showing a fertilizer processing unit according to an embodiment of the present invention, and FIG. 6 is an exemplary cross-sectional view taken along line AA of FIG. 5.

[0030] As shown in FIGS. 1 to 6, the organic fertilizer manufacturing system (1000) may include a pellet manufacturing module (2000) and a fertilizer processing module (3000).

[0031] The pellet manufacturing module (2000) can manufacture fertilizer pellets (1) using raw materials provided from multiple hoppers (not shown) that store different raw materials.

[0032] The pellet manufacturing module (2000) may include a quantitative ejector (2100), a crusher (2200), a mixer (2300), a steamer (2400), and a molder (2500).

[0033] The quantitative dispenser (2100) is configured to supply each raw material to each hopper that stores different raw materials. For example, if four hoppers are provided, from the first hopper to the fourth hopper, the raw materials contained in the first hopper to the fourth hopper may be different raw materials.

[0034] The first to fourth hoppers, which accommodate different raw materials, may have different raw material input rates depending on the type of organic fertilizer (2) ultimately manufactured. In other words, the organic fertilizer (2) ultimately manufactured may have different mixing ratios of each raw material.

[0035] For example, when the final organic fertilizer (2) product is divided into gold product, plus product, alpha product, and export product, the raw material cost input from hoppers 1 to 4 during the manufacturing process of each product may be different.

[0036] In this way, the quantitative ejector (2100) configured to supply raw materials to each hopper can selectively supply the necessary raw materials through a raw material monitoring unit (not shown) that monitors the raw material status in each hopper in real time.

[0037] For example, the quantitative ejector (2100) may be installed in a raw material warehouse where various raw materials are stored, and the first to fourth hoppers may be installed in a mixing warehouse, which is a different space from the raw material warehouse. That is, the quantitative ejector (2100) and the hopper may be located in different locations, and the raw materials supplied from the quantitative ejector (2100) may be supplied to each hopper through various transport means, such as a bucket elevator or a conveyor.

[0038] In this way, the user can check the amount of raw materials received in the first to fourth hoppers through the raw material monitoring unit installed in the raw material warehouse, and if the amount of raw materials received in the first hopper is below a certain amount, the quantitative ejector (2100) can additionally supply the insufficient raw materials to the first hopper.

[0039] The quantitative ejector (2100) may be configured so that one quantitative ejector (2100) supplies raw materials to each of multiple hoppers, or a quantitative ejector (2100) may be individually provided for each hopper.

[0040] Meanwhile, the crusher (2200) is configured to crush raw materials supplied from each hopper. The crusher (2200) is configured to crush lumped raw materials supplied from each hopper into powder form so that raw material mixing can be effectively performed in the mixer (2300). In other words, the crusher (2200) crushes raw materials so that the particles are evenly distributed.

[0041] The mixer (2300) is configured to mix raw materials crushed by the crusher (2200).

[0042] The mixer (2300) can effectively mix multiple raw materials through various raw material mixing means, such as an impeller.

[0043] In this way, the mixed raw materials mixed in the mixer (2300) are supplied to the steamer (2400).

[0044] The steamer (2400) supplies moisture to the mixed raw materials. The amount of moisture supplied to the raw materials through the steamer (2400) may vary depending on the final product of the organic fertilizer (2) manufactured here.

[0045] For example, if the organic fertilizer (2) to be finally manufactured is manufactured in the form of cylindrical pellets, the steamer (2400) may supply moisture so that the moisture content of the mixed raw materials becomes 16 to 18%. And, if the organic fertilizer (2) to be finally manufactured is manufactured in the form of cylindrical granules, the steamer (2400) may supply moisture so that the moisture content of the mixed raw materials becomes 20 to 24%.

[0046] In this way, the steamer (2400) is configured to supply more moisture to the organic fertilizer (2) manufactured in the form of granules than to the organic fertilizer (2) manufactured in the form of pellets. This is to prevent the breakage of the fertilizer pellets (1) during the process of molding and processing the organic fertilizer (2) manufactured in the form of granules into a granule shape in the fertilizer processing unit (3100) described below, and to enable effective shape transformation into a circular granule shape.

[0047] Meanwhile, the molding machine (2500) molds the raw material supplied from the steam machine (2400) into cylindrical fertilizer pellets (1).

[0048] The molding machine (2500) may include an inner housing (2510), a molding net (2520), a pressurizing part (2530), a raw material guide part (2540), an outer housing (2550), and a cutting part (2560).

[0049] A raw material receiving portion (2511) is formed in the inner housing (2510) to receive raw materials supplied from the steam generator (2400).

[0050] And the outer housing (2550) is combined with the inner housing (2510) and is provided on the outside of the inner housing (2510). The inner diameter of the outer housing (2550) is formed to be larger than the outer diameter of the inner housing (2510).

[0051] In the external housing (2550), a supply hole (2551) is formed that is connected to a raw material moving pipe (2410) through which raw material supplied with steam from a steam generator (2400) moves, so that raw material supplied from the steam generator (2400) can be guided into a raw material receiving portion (2511) through the supply hole (2551).

[0052] A plurality of extrusion holes (2521) are formed in the forming net (2520). Accordingly, as the inner housing (2510) rotates, the raw material contained in the raw material receiving portion (2511) is pressurized toward the outside of the forming net (2520) by the pressurizing portion (2530). That is, the raw material passing through the extrusion holes (2521) by the pressurizing portion (2530) is extruded into a cylindrical shape.

[0053] This pressurizing unit (2530) is provided inside the inner housing (2510). The pressurizing unit (2530) is formed, for example, in the form of a roller and extrudes the raw material flowing between the forming net (2520) and the pressurizing unit (2530).

[0054] The raw material guide part (2540) is connected to the lower part of the frame that supports the pressurizing part (2530). The raw material guide part (2540) is configured to guide the raw material supplied through the supply hole (2551) to the raw material receiving part (2511).

[0055] Such a raw material guide part (2540) is arranged at an angle with respect to the longitudinal direction of the inner housing (2510), so that raw material introduced through the supply hole (2551) during the process of rotating the inner housing (2510) can be effectively supplied to the raw material receiving part (2511).

[0056] The cutting section (2560) is coupled to the inside of the outer housing (2550) and is spaced apart at predetermined intervals along the perimeter of the outer housing (2550).

[0057] Such a cutting unit (2560) cuts a cylindrical solid raw material extruded to the outside through an extrusion hole (2521) while the inner housing (2510) and the forming net (2520) rotate in one direction. Accordingly, a fertilizer pellet (1), which is a cylindrical solid raw material cut by the cutting unit (2560), can be manufactured.

[0058] Meanwhile, the fertilizer processing module (3000) processes the fertilizer pellets (1) supplied from the molding machine (2500) to manufacture various types of organic fertilizers (2).

[0059] The fertilizer processing module (3000) may include a fertilizer processing unit (3100), a blower unit (3200), and a packaging machine (3300).

[0060] The fertilizer processing unit (3100) manufactures fertilizer pellets (1) supplied from the molding machine (2500) into organic fertilizer (2). The organic fertilizer (2) manufactured from the fertilizer processing unit (3100) can be selectively manufactured into, for example, granule fertilizer, coated granule fertilizer, pellet fertilizer, and coated pellet fertilizer.

[0061] A fertilizer processing unit (3100) such as this may include a cylindrical rotating housing (3110), a mixing blade unit (3120), a coating liquid supply unit (3130), a hot air supply unit (3140), and an operation control unit (3150).

[0062] The cylindrical rotating housing (3110) forms the outer shape of the fertilizer processing unit (3100).

[0063] Inside the cylindrical rotating housing (3110), a hollow processing space (3111) is formed to accommodate fertilizer pellets (1).

[0064] An inlet is formed at one end of the cylindrical rotating housing (3110) through which fertilizer pellets (1) supplied from a molding machine (2500) are introduced, and an outlet is formed at the other end of the cylindrical rotating housing (3110) through which processed organic fertilizer (2) is discharged.

[0065] In this way, the fertilizer pellets (1) introduced through the inlet are selectively shaped and microbially coated in the process of moving along the length of the cylindrical rotating housing (3110), and an organic fertilizer (2) of a required shape can be manufactured.

[0066] The cylindrical rotating housing (3110) has an inclined shape so that it slopes downward from the inlet to the outlet.

[0067] This cylindrical rotary housing (3110) can be rotated by the operation of the rotary roller (3112) while being supported by the rotary roller (3112). In this way, during the process of rotating the cylindrical rotary housing (3110), the fertilizer pellets (1) supplied to the processing space (3111) can be moved along the longitudinal direction of the cylindrical rotary housing (3110). In this process, the fertilizer pellets (1) can be manufactured into an organic fertilizer (2) of a required shape.

[0068] Here, the rotary roller (3112) can rotate the cylindrical rotary housing (3110) at a required rotation speed by power provided from a rotary power unit (not shown).

[0069] The hot air supply unit (3140) is connected to one end of the cylindrical rotating housing (3110). This hot air supply unit (3140) is configured to supply hot air to the processing space unit (3111).

[0070] In this way, the hot air supplied from the hot air supply unit (3140) dries the fertilizer pellets (1) supplied to the processing space unit (3111).

[0071] The fertilizer pellets (1) manufactured with a low moisture content through the steamer (2400) mentioned above are dried in a short time by hot air supplied from the hot air supply unit (3140), so that the hardened fertilizer pellets (1) are hardly deformed in shape even when moved along the length direction of the cylindrical rotating housing (3110).

[0072] In contrast, fertilizer pellets (1) manufactured with a high moisture content through a steamer (2400) are crushed or worn out when they collide with the inner surface of the cylindrical rotary housing (3110) during the process of rotating the cylindrical rotary housing (3110) or when the fertilizer pellets (1) collide with each other. In this process, the cylindrical fertilizer pellets (1) are deformed into a circular granule shape. That is, since the fertilizer pellets (1) manufactured with a high moisture content have a slow drying time, the shape is deformed into a granule shape until the fertilizer pellets (1) are completely dried.

[0073] Furthermore, the operation control unit (3150) can selectively control the operation of the hot air supply unit (3140).

[0074] For example, when manufacturing organic fertilizer (2) in the shape of a pellet, the operation control unit (3150) may control the hot air temperature supplied from the hot air supply unit (3140) to be higher, or the hot air strength to be higher.

[0075] Conversely, when producing granular organic fertilizer (2), the operation control unit (3150) may control to further lower the hot air temperature supplied from the hot air supply unit (3140) or to further lower the hot air strength.

[0076] In this way, the operation control unit (3150) selectively controls the hot air temperature and hot air strength of the hot air supply unit (3140), and can also selectively control the working conditions so that the organic fertilizer (2) can be effectively manufactured into a required shape.

[0077] And a mixing blade (3120) is provided inside the cylindrical rotating housing (3110).

[0078] The mixing wing (3120) ensures that the hot air supplied from the hot air supply unit (3140) is effectively supplied to the fertilizer pellets (1).

[0079] Such mixing wing members (3120) protrude at predetermined intervals along the circumference of the cylindrical rotating housing (3110). In addition, the mixing wing members (3120) may also be arranged at predetermined intervals in the longitudinal direction of the cylindrical rotating housing (3110).

[0080] The mixing blade (3120) mixes the fertilizer pellets (1) accommodated in the processing space (3111) while the cylindrical rotating housing (3110) rotates, and simultaneously supplies hot air between the plurality of fertilizer pellets (1). Accordingly, the drying efficiency of the fertilizer pellets (1) can be further increased.

[0081] The coating liquid supply unit (3130) is coupled to one end of the cylindrical rotating housing (3110).

[0082] The coating solution supply unit (3130) sprays the microbial coating solution into the processing space unit (3111) so that microbial coating treatment is performed on the outer surface of the fertilizer pellet (1).

[0083] The operation of the coating solution supply unit (3130) can be selectively controlled by the operation control unit (3150). That is, when microbial coating is required for the organic fertilizer (2) to be finally manufactured, the operation control unit (3150) can operate the coating solution supply unit (3130) to coat the outer surface of the fertilizer pellet (1) with microorganisms. In this way, the coated organic fertilizer (2) can be manufactured as a coated granular fertilizer and a coated pellet fertilizer.

[0084] The coating solution supply unit (3130) controls the microbial coating solution sprayed onto the fertilizer pellets (1), so that the outer surface of the organic fertilizer (2) finally manufactured can be coated with the required microbial coating solution.

[0085] Such a coating liquid supply unit (3130) may include a coating liquid tank unit (3131), a spray nozzle (3132), and a metering pump (3133).

[0086] The coating solution tank (3131) may be provided in multiple units. That is, each coating solution tank (3131) may contain a different microbial coating solution.

[0087] Each of these coating solution tanks (3131) is connected to a metering pump (3133), and the microbial coating solution can be supplied to the spray nozzle (3132) by the operation of the metering pump (3133).

[0088] A valve (not shown) may be provided on the connecting pipe (3134) to which the coating liquid tank (3131) and the quantitative pump (3133) are connected, and the operation control unit (3150) can selectively control the opening and closing of the valve.

[0089] Accordingly, the operation control unit (3150) can coat the organic fertilizer (2) with microorganisms in various forms through valve control. For example, the operation control unit (3150) can control to spray only the first microbial coating solution contained in the first coating solution tank to the fertilizer pellets (1), or can control to spray only the second microbial coating solution contained in the second coating solution tank to the fertilizer pellets (1). Alternatively, the operation control unit (3150) can control to spray a microbial coating solution in which the first microbial coating solution and the second microbial coating solution are mixed to the fertilizer pellets (1). In the case of the mixed microbial coating solution, the mixing ratio of the first microbial coating solution and the second microbial coating solution can be selectively controlled by controlling the opening and closing amount of the valves provided in each connecting pipe (3134).

[0090] In the present invention, a form having two coating liquid tank parts (3131) is described as an example, but the number of coating liquid tank parts (3131) is not necessarily limited to two, and may be provided in various numbers.

[0091] The metering pump (3133) is configured to supply the microbial coating solution to the spray nozzle (3132) at a predetermined pressure. The operation of the metering pump (3133) can also be controlled by the operation control unit (3150).

[0092] The spray nozzle (3132) is connected to a metering pump (3133) and is configured to spray the microbial coating solution supplied from the metering pump (3133) onto the fertilizer pellets (1).

[0093] The spray nozzle (3132) is provided at one end of the cylindrical rotating housing (3110) and is arranged in the processing space (3111). The spray nozzle (3132) is provided at one end of the cylindrical rotating housing (3110) and is configured to spray a microbial coating solution onto the outer surface of a fertilizer pellet (1) supplied to the cylindrical rotating housing (3110) through an inlet. That is, the spray nozzle (3132) is configured to spray a microbial coating solution onto the fertilizer pellet (1) accommodated at one end of the cylindrical rotating housing (3110).

[0094] A plurality of injection holes (not shown) are formed in the injection nozzle (3132), so that the microbial coating solution injected from the injection holes can be injected into the fertilizer pellets (1) accommodated in one side of the cylindrical rotating housing (3110).

[0095] Here, the length of the spray nozzle (3132) is less than 1 / 3 of the length of the cylindrical rotating housing (3110), and the microbial coating solution is sprayed onto the fertilizer pellet (1). This is to ensure that the microbial coating solution is effectively dried by hot air supplied from the hot air supply unit (3140) during the process in which the fertilizer pellet (1) is moved to the other side of the cylindrical rotating housing (3110) while the microbial coating solution is applied to the outer surface of the fertilizer pellet (1).

[0096] That is, if the length of the injection nozzle (3132) exceeds 1 / 3 of the length of the cylindrical rotating housing (3110), the microbial coating solution applied to the outer surface of the fertilizer pellet (1) may have a problem in that the drying process is not properly performed.

[0097] Accordingly, the length of the spray nozzle (3132) is made to be less than 1 / 3 of the length of the cylindrical rotating housing (3110), and more preferably, for effective drying treatment of the microbial coating solution, the length of the spray nozzle (3132) is made to be less than 1 / 4 of the length of the cylindrical rotating housing (3110).

[0098] In this way, organic fertilizer (2) manufactured from granule fertilizer, coated granule fertilizer, pellet fertilizer, and coated pellet fertilizer from the fertilizer processing unit (3100) is supplied to the blower unit (3200).

[0099] The blower (3200) supplies air at room temperature and cools the organic fertilizer (2) that has been heated and dried to a certain temperature or higher by the hot air supply unit (3140).

[0100] And the packaging machine (3300) packages the organic fertilizer (2) supplied from the blower (3200) by product.

[0101] However, this is only a preferred embodiment of the present invention, and the scope of the rights of the present invention is not limited by the scope of the description of this embodiment.

[0102] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0103] The scope of the present invention is indicated by the claims described below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

1. A pellet manufacturing module for manufacturing fertilizer pellets from multiple hoppers storing different raw materials; and It includes a fertilizer processing module that processes the fertilizer pellets supplied from the pellet manufacturing module to manufacture organic fertilizer; An organic fertilizer manufacturing system in which a fertilizer processing unit provided in the above fertilizer processing module manufactures the organic fertilizer, and is configured to selectively manufacture granular fertilizer, coated granular fertilizer, pellet fertilizer, and coated pellet fertilizer.

2. In paragraph 1, The above fertilizer processing unit is, A cylindrical rotating housing having an inlet at one end for introducing the fertilizer pellets supplied from the pellet manufacturing module, and an outlet at the other end for discharging the organic fertilizer that has been selectively processed; A mixing wing portion provided at predetermined intervals along the circumferential and longitudinal directions of the cylindrical rotating housing; A coating liquid supply unit coupled to one end of the cylindrical rotating housing and spraying a coating liquid into the interior of the cylindrical rotating housing; A hot air supply unit coupled to one end of the cylindrical rotating housing and supplying hot air into the interior of the cylindrical rotating housing; and An organic fertilizer manufacturing system characterized by including an operation control unit that controls the operation of the coating solution supply unit and the hot air supply unit.

3. In paragraph 2, The above operation control unit, An organic fertilizer manufacturing system characterized in that the outer surface of the organic fertilizer is coated with microorganisms by spraying the required microbial coating solution onto the fertilizer pellets through the operation control of the coating solution supply unit.

4. In paragraph 2, The above operation control unit, An organic fertilizer manufacturing system characterized in that the organic fertilizer having a required shape is manufactured by controlling the temperature and strength of the hot air supplied to the fertilizer pellets through the operation control of the hot air supply unit.

5. In paragraph 2, The above coating solution supply unit, Each coating solution tank section containing a different microbial coating solution; A spray nozzle disposed in a processing space portion within the cylindrical rotating housing in which the fertilizer pellets are accommodated, and spraying a microbial coating solution supplied from the coating solution tank portion into the processing space portion; and A metering pump connected to the coating solution tank and supplying the microbial coating solution contained in the coating solution tank to the spray nozzle; An organic fertilizer manufacturing system characterized in that the above operation control unit is configured to control the supply of the microbial coating solution supplied from each of the above coating solution tanks to the spray nozzle.

6. In paragraph 5, An organic fertilizer manufacturing system, characterized in that the spray nozzle is arranged on one end side of the cylindrical rotating housing, and the length of the spray nozzle is less than 1 / 3 of the length of the cylindrical rotating housing.

7. In paragraph 1, The above pellet manufacturing module, A quantitative ejector that supplies raw materials to multiple hoppers storing different raw materials; A crusher that crushes raw materials supplied from the above hopper; A mixer that mixes raw materials crushed from the crusher; A steamer that supplies moisture to the raw materials mixed from the above mixer; and It includes a molding machine that molds the raw material supplied from the steamer into the fertilizer pellets; The above fertilizer processing module, A blower for cooling the organic fertilizer manufactured from the fertilizer processing unit; and An organic fertilizer manufacturing system further comprising a packaging machine for packaging the organic fertilizer supplied from the blower.

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