CN112961013A - Multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer - Google Patents
Multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer Download PDFInfo
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- CN112961013A CN112961013A CN202110312676.4A CN202110312676A CN112961013A CN 112961013 A CN112961013 A CN 112961013A CN 202110312676 A CN202110312676 A CN 202110312676A CN 112961013 A CN112961013 A CN 112961013A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
Abstract
The invention relates to the technical field of fertilizers, in particular to a multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer. The granulating device comprises a granulating disc, wherein a first group of check rings, a second group of check rings, a third group of check rings and a fourth group of check rings are sequentially arranged on the top of the granulating disc from inside to outside, a primary granulating area is formed inside the first group of check rings, a primary screening area is formed between the second group of check rings and the first group of check rings, a secondary granulating area is formed between the third group of check rings and the second group of check rings, a secondary screening area is formed between the fourth group of check rings and the third group of check rings, a primary raw material is added into the primary granulating area during production, a secondary raw material is added into the secondary granulating area, the primary raw material is prepared into an inner core fertilizer in the primary granulating area, then the inner core fertilizer is screened by the primary screening area and then enters the secondary granulating area to be coated with the secondary raw material, an; after fertilization, the outer core fertilizer and the inner core fertilizer are dissolved in stages to supply the plants.
Description
Technical Field
The invention relates to the technical field of fertilizers, in particular to a multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer.
Background
The fertilizer is a substance which provides one or more nutrient elements necessary for plants, improves the soil property and improves the soil fertility level, and is one of the material bases of agricultural production. Mainly comprises ammonium phosphate fertilizer, macroelement water-soluble fertilizer, secondary element fertilizer, biological fertilizer, organic fertilizer, multi-dimensional field energy concentrated organic fertilizer and the like.
The existing fertilizer production process is that the raw materials are granulated through a granulator, then produced semi-finished product particles are sent into a screening machine for screening, and finally dried and bagged, so that the production process is complicated, the semi-finished product particles are transferred to a vibrating screen for screening, and the breakage rate of the semi-finished product particles is high.
No matter the organic fertilizer or the compound fertilizer, the raw materials of the fertilizer are single, but the agricultural plant mainly has three stages in the growth process, namely a seedling stage, a jointing stage and a fruit expansion stage, different kinds of fertilizers are required to be applied in different stages, the labor force is large during working, and the plants are easy to trample and break by multiple fertilization, so that the growth of crops is influenced.
Disclosure of Invention
The invention aims to solve the technical problem and provides a multi-disc combined granulation method for producing granular bio-organic fertilizer in a large scale, which aims at the technical defects, and comprises the steps that a first group of check rings, a second group of check rings, a third group of check rings and a fourth group of check rings are sequentially arranged on the top of a granulation disc from inside to outside, a primary granulation area is formed inside the first group of check rings, a primary screening area is formed between the second group of check rings and the first group of check rings, a secondary granulation area is formed between the third group of check rings and the second group of check rings, a secondary screening area is formed between the fourth group of check rings and the third group of check rings, a primary raw material is added into the primary granulation area during production, a secondary raw material is added into the secondary granulation area, an inner core fertilizer is prepared into the primary granulation area, then the primary raw material is screened by the primary screening area and then enters the secondary granulation area to wrap the secondary, the dual-core granulation and screening processes can be realized on the same granulator; after fertilization, the outer core fertilizer and the inner core fertilizer are dissolved in stages to supply the plants.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the dual-core controlled release fertilizer comprises a dual-core controlled release fertilizer, a base, a speed reducing motor and a granulation disc; the top of the base is provided with a support frame; a rotary frame is arranged at the top of the support frame; a bearing seat is arranged in the middle of the revolving frame; the speed reducing motor and the granulating disc are respectively arranged on the left side and the right side of the bearing seat, and the granulating disc is driven to rotate by the speed reducing motor; the top of the granulating disc is sequentially provided with a first group of check rings, a second group of check rings, a third group of check rings and a fourth group of check rings from inside to outside; a material collecting disc is fixedly arranged on the rotary frame between the granulating disc and the rotary frame; the top of the material collecting disc is provided with a first group of sealing rings and a second group of sealing rings.
Further optimizing the technical scheme, a primary granulation area is formed inside the first group of check rings; a primary screening area is formed between the second group of check rings and the first group of check rings; and the bottom of the primary screening area is provided with a screen hole.
Further optimizing the technical scheme, a secondary granulation area is formed between the third group of check rings and the second group of check rings; a secondary screening area is formed between the fourth group of check rings and the third group of check rings; and the bottom of the secondary screening area is provided with a screen hole.
Further optimizing the technical scheme, a primary feed back area is formed inside the first group of sealing rings; the sieve pores of the primary sieving area are communicated with the primary feed back area; a secondary material return area is formed between the first group of sealing rings and the second group of sealing rings; and the sieve pores of the secondary sieving area are communicated with the secondary material returning area.
Further optimizing the technical scheme, the bottom of the primary feed back area is provided with a primary feed back outlet; a secondary feed back outlet is formed in the bottom of the secondary feed back area; and a material distributing pipe is arranged on one side of the bottom of the material collecting disc and used for conveying raw materials of the primary feed back outlet and the secondary feed back outlet in a classified mode.
Further optimizing the technical scheme, the top of the revolving frame is provided with a fixed frame; two groups of scraping plates are arranged on the fixed frame; two groups of scrapers are respectively arranged above the inner parts of the primary granulation area and the secondary granulation area.
Further optimizing the technical scheme, the production steps of the dual-core controlled release fertilizer are as follows:
(1) and adding a slow release fertilizer raw material into the primary granulation area.
(2) The core fertilizer is prepared by rotating the slow release fertilizer raw materials in a primary granulation area.
(3) And the kernel fertilizer passes through the first group of check rings from the primary granulation area and enters the primary screening area for screening.
(4) And the screened kernel fertilizer passes through the second group of check rings and enters a secondary granulation area.
(5) Organic fertilizer raw materials or compound fertilizer raw materials are added into the secondary granulation area, and the outer core fertilizer is wrapped outside the inner core fertilizer to prepare the dual-core controlled release fertilizer.
(6) And the binuclear controlled release fertilizer passes through the third group of retainer rings and enters a secondary screening area for screening.
(7) And (4) the screened dual-core controlled release fertilizer passes through a fourth group of check rings and falls onto a conveyor belt, then the dual-core controlled release fertilizer is dried by a dryer, and finally the dual-core controlled release fertilizer is weighed and bagged.
According to the technical scheme, the slow release fertilizer raw materials screened out by the primary screening area enter the primary material returning area, then fall onto the conveying belt through the primary material returning outlet and the material distributing pipe, and are backfilled into the primary granulation area.
Further optimizing the technical scheme, the organic fertilizer raw materials or the compound fertilizer raw materials screened out by the secondary screening area enter the secondary material returning area, then fall onto the conveying belt through the secondary material returning outlet and the material distributing pipe, and are backfilled into the secondary granulation area.
Compared with the prior art, the invention has the following advantages:
1. during production, a primary raw material is added in a primary granulation area, a secondary raw material is added in a secondary granulation area, the primary raw material is prepared into an inner core fertilizer in the primary granulation area, then the inner core fertilizer is screened in a primary screening area, and then enters a secondary granulation area to wrap the secondary raw material, and an outer core fertilizer is wrapped outside the inner core fertilizer to prepare the dual-core controlled release fertilizer.
2. Primary granulation, primary screening, secondary granulation and secondary screening can all be accomplished in same granulator, can realize the process of dual-core granulation and screening on the same granulator, and not only production efficiency is high, saves the shale shaker moreover, and production line equipment cost is low, and production occupation space is less.
3. After fertilization, the outer core fertilizer and the inner core fertilizer are dissolved in stages to supply nutrients to plants, and the effect of supplying different nutrients in different stages can be achieved by one-time fertilization; the farmland operation not only saves labor force, but also does not cause operation damage to plants, and the plants grow vigorously.
Drawings
FIG. 1 is a front side structure diagram of a granulator of a multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer.
Fig. 2 is a rear structure diagram of a multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer.
Fig. 3 is a top view of a structure of a granulating pan of a multi-pan combined granulating method for large-scale production of granular bio-organic fertilizer.
Fig. 4 is a partial sectional view of an internal installation structure of a granulation disc of a multi-disc combined granulation method for mass production of granular bio-organic fertilizer.
Fig. 5 is a partial sectional view of the internal structure of a dual-core controlled-release fertilizer in a multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer.
Fig. 6 is a processing flow chart of a multi-disc combined granulation method for producing granular bio-organic fertilizer in a large scale.
FIG. 7 is a fertilizer efficiency curve diagram of a multi-disc combined granulation method for scale production of granular bio-organic fertilizer.
In the figure: 1. a binuclear controlled release fertilizer; 101. kernel fertilizer; 102. an outer nuclear fertilizer; 2. a base; 201. a support frame; 3. a reduction motor; 4. a granulation disc; 401. a first set of retaining rings; 402. a second set of retaining rings; 403. a third set of retaining rings; 404. a fourth set of retaining rings; 5. a revolving frame; 501. a bearing seat; 502. a fixed mount; 503. a squeegee; 6. a material collecting disc; 601. a first set of seal rings; 602. a second set of seal rings; 701. a primary granulation zone; 702. a secondary granulation zone; 801. primary screening and partitioning; 802. secondary screening and partitioning; 803. screening holes; 901. a primary feed back zone; 902. a secondary material return area; 903. a primary feed back outlet; 904. a secondary feed back outlet; 905. and a material distributing pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: with reference to fig. 1-7, a multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer is characterized in that: comprises a dual-core controlled release fertilizer 1, a base 2, a speed reducing motor 3 and a granulation disc 4; the top of the base 2 is provided with a supporting frame 201; the top of the supporting frame 201 is provided with a revolving frame 5; a bearing seat 501 is arranged in the middle of the revolving frame 5; the speed reducing motor 3 and the granulating disc 4 are respectively arranged at the left side and the right side of the bearing seat 501, and the granulating disc 4 is driven to rotate by the speed reducing motor 3; the top of the granulating disc 4 is sequentially provided with a first group of retainer rings 401, a second group of retainer rings 402, a third group of retainer rings 403 and a fourth group of retainer rings 404 from inside to outside; a material collecting disc 6 is fixedly arranged on the rotary frame 5 between the granulating disc 4 and the rotary frame 5; the top of the material collecting tray 6 is provided with a first group of sealing rings 601 and a second group of sealing rings 602.
Preferably, the first set of retainer rings 401 internally form a primary granulation zone 701; a primary screening area 801 is formed between the second group of retainer rings 402 and the first group of retainer rings 401; the bottom of the primary screening area 801 is provided with a screening hole 803.
Preferably, a secondary granulation zone 702 is formed between the third set of check rings 403 and the second set of check rings 402; a secondary screening area 802 is formed between the fourth set of retaining rings 404 and the third set of retaining rings 403; the bottom of the secondary screening area 802 is provided with a screening hole 803.
Preferably, a primary material return area 901 is formed inside the first group of sealing rings 601; the screen holes 803 of the primary screening area 801 are communicated with the primary material return area 901; a secondary material return area 902 is formed between the first group of sealing rings 601 and the second group of sealing rings 602; the screen holes 803 of the secondary screening zone 802 are communicated with a secondary feed-back zone 902.
Preferably, a primary feed back outlet 903 is arranged at the bottom of the primary feed back area 901; a secondary feed-back outlet 904 is arranged at the bottom of the secondary feed-back area 902; and a material distributing pipe 905 is arranged on one side of the bottom of the material collecting disc 6 and used for conveying raw materials of the primary material return outlet 903 and the secondary material return outlet 904 in a classified mode.
Preferably, a fixed frame 502 is arranged at the top of the revolving frame 5; two groups of scraping plates 503 are arranged on the fixed frame 502; two sets of scrapers 503 are disposed above and inside the primary granulation zone 701 and the secondary granulation zone 702, respectively.
Preferably, the production steps of the dual-core controlled release fertilizer are as follows:
(1) slow release fertilizer raw materials are added into the primary granulation zone 701.
(2) The core fertilizer 101 is produced by rotating the slow release fertilizer raw materials in the primary granulation zone 701.
(3) The inner core fertilizer 101 passes through the first group of retainer rings 401 from the primary granulation zone 701 and enters the primary screening zone 801 to be screened.
(4) The screened core fertilizer 101 passes through the second set of retaining rings 402 and enters the secondary granulation zone 702.
(5) Organic fertilizer raw materials or compound fertilizer raw materials are added into the secondary granulation area 702, and the outer core fertilizer 102 is wrapped outside the inner core fertilizer 101 to prepare the dual-core controlled release fertilizer 1.
(6) The dual-core controlled release fertilizer 1 passes through the third group of retainer rings 403 and enters the secondary screening area 802 for screening.
(7) The screened dual-core controlled release fertilizer 1 passes through the fourth group of retainer rings 404 and falls onto a conveyor belt, and then is dried by a dryer, and finally weighed and bagged.
Preferably, the slow release fertilizer raw material sieved out from the primary sieving area 801 enters a primary returning area 901, then falls onto a conveyor belt through a primary returning outlet 903 and a distributing pipe 905, and is backfilled into the primary granulating area 701.
Preferably, the organic fertilizer raw materials or compound fertilizer raw materials screened out by the secondary screening area 802 enter a secondary material returning area 902, then fall onto a conveyor belt through a secondary material returning outlet 904 and a material distributing pipe 905, and are backfilled into the secondary granulation area 702.
The preparation process of the kernel fertilizer comprises the following steps: referring to fig. 1-6, an outer core fertilizer 102 of a dual-core controlled release fertilizer 1 is used as an organic fertilizer raw material, an inner core fertilizer 101 is used as a slow release fertilizer raw material, the slow release fertilizer raw material is added into a primary granulation area 701, the organic fertilizer raw material is added into a secondary granulation area 702, when a speed reduction motor 3 works, a granulation disc 4 is driven to rotate together, a first group of retainer rings 401, a second group of retainer rings 402, a third group of retainer rings 403 and a fourth group of retainer rings 404 are sequentially arranged at the top of the granulation disc 4 from inside to outside, the primary granulation area 701 is formed inside the first group of retainer rings 401, a primary screening area 801 is formed between the second group of retainer rings 402 and the first group of retainer rings 401, screen holes 803 are formed in the bottom of the primary screening area 801, the slow release fertilizer raw material rolls and is granulated in the primary granulation area 701 to form the inner core fertilizer 101.
The top of the material collecting disc 6 is provided with a first group of sealing rings 601 and a second group of sealing rings 602, a primary material return area 901 is formed inside the first group of sealing rings 601, a primary material return outlet 903 is formed at the bottom of the primary material return area 901, slow release fertilizer raw materials can leak down through a sieve hole 803 at the bottom of the primary sieve area 801, and the core fertilizer 101 can pass through the second group of sealing rings 402 and enter the secondary granulation area 702.
The slow release fertilizer raw materials can enter a recovery area after leaking from a primary screening area 801 and move downwards under the action of the gravity of the slow release fertilizer raw materials, a material distributing pipe 905 is arranged on one side of the bottom of the material collecting disc 6 and used for classifying and conveying raw materials of a primary material return outlet 903 and a secondary material return outlet 904, then the raw materials enter the material distributing pipe 905 through the primary material return outlet 903, fall onto a conveying belt through one outlet of the material distributing pipe 905, and finally backfill into a primary granulation area 701 through the conveying belt.
The preparation process of the fertilizer for the outer core comprises the following steps: when the core fertilizer 101 enters the secondary granulation area 702, the core fertilizer 101 rolls in the secondary granulation area 702, and organic fertilizer raw materials are coated outside the core fertilizer 101, so that the outer core fertilizer 102 is coated outside the core fertilizer 101, and a semi-finished product of the dual-core controlled release fertilizer 1 is prepared.
After being made, the semi-finished product of the outer nuclear fertilizer 102 can cross the third group of check rings 403 to enter the secondary screening area 802, and the screen holes 803 passing through the secondary screening area 802 fall into the secondary recovery area, and finally fall onto the conveying belt through the secondary feed back outlet 904 and the other outlet of the material distributing pipe 905, and the organic fertilizer is backfilled into the secondary granulation area 702 through the conveying belt.
The finally prepared dual-core controlled release fertilizer 1 can cross the fourth group of retainer rings 404 to enter a main conveyer belt, and is conveyed to a dryer for drying through the main conveyer belt, and finally the fertilizer is weighed and bagged to prepare a finished product.
Therefore, during production, a primary raw material is added into the primary granulation area 701, a secondary raw material is added into the secondary granulation area 702, the primary raw material is prepared into the core fertilizer 101 in the primary granulation area 701, then the core fertilizer 101 is sieved by the primary sieving area 801, and then enters the secondary granulation area 702 to wrap the secondary raw material, and the outer core fertilizer 102 is wrapped outside the core fertilizer 101 to prepare the dual-core controlled release fertilizer 1; once granulation, screening, secondary granulation and secondary screening all can be accomplished in same granulator, can realize the process of dual-core granulation and screening on the same granulator, and not only production efficiency is high, saves the shale shaker moreover, rotates through granulation dish 4 and drives sieve mesh 803 and rotate and sieve, and production line equipment cost is low, and production occupation space is less.
Detection and analysis: taking an experimental field of 13 square meters, uniformly spreading 5kg of dual-core controlled release fertilizer into the field with the depth of 20 centimeters, wherein the controlled release fertilizer contains 13a of the total content of the component A and does not contain the component B; the total amount of the component B in the organic fertilizer is 13B, and the component A is not contained; then, turning the soil, wherein the turning depth is 8 centimeters; every 10 days, 1 square meter of soil is taken to detect the components a and B in the soil, and the detection and evaluation result shows that the content of A in the 1 square meter of soil is a1 and the content of B in the 1 square meter of soil is B1, so that the dissolution rate of the slow release fertilizer is a1 and the dissolution rate of the organic fertilizer is B1 in 10 days; then taking 1 square meter of soil every 10 days, measuring the contents of A and B in the soil, and calculating the dissolution rate at corresponding time, thereby obtaining a dissolution rate curve chart.
According to the content detection curves of the core fertilizer and the outer core fertilizer, the outer core fertilizer is completely dissolved in 40 days, the inner core fertilizer is dissolved in 30 days, and the inner core fertilizer is basically completely dissolved in 130 days.
In conclusion, after fertilization, the external outer core fertilizer (organic fertilizer) is firstly dissolved and is basically and completely dissolved in 40 days, so that the plants in the seedling stage can be supplied with the fertilizer, then the internal inner core fertilizer (slow release fertilizer) starts to be dissolved in 30 days, so that the plants in the jointing stage and the fruit stage can be continuously supplied with the fertilizer, and the supply of the inner core fertilizer is finished until 130 days.
After fertilization, the outer core fertilizer and the inner core fertilizer are dissolved in stages to supply nutrients to plants, and the effect of supplying different nutrients in different stages can be achieved by one-time fertilization; the farmland operation not only saves labor force, but also does not cause operation damage to plants, and the plants grow vigorously.
The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the invention belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. A multi-disc combined granulation method for large-scale production of granular bio-organic fertilizer is characterized by comprising the following steps: comprises a dual-core controlled release fertilizer 1, a base 2, a speed reducing motor 3 and a granulation disc 4; the top of the base 2 is provided with a supporting frame 201; the top of the supporting frame 201 is provided with a revolving frame 5; a bearing seat 501 is arranged in the middle of the revolving frame 5; the speed reducing motor 3 and the granulating disc 4 are respectively arranged at the left side and the right side of the bearing seat 501, and the granulating disc 4 is driven to rotate by the speed reducing motor 3; the top of the granulating disc 4 is sequentially provided with a first group of retainer rings 401, a second group of retainer rings 402, a third group of retainer rings 403 and a fourth group of retainer rings 404 from inside to outside; a material collecting disc 6 is fixedly arranged on the rotary frame 5 between the granulating disc 4 and the rotary frame 5; the top of the material collecting tray 6 is provided with a first group of sealing rings 601 and a second group of sealing rings 602.
2. The multi-disc combined granulation method for scale production of granular bio-organic fertilizer according to claim 1, characterized in that: a primary granulation area 701 is formed inside the first group of retainer rings 401; a primary screening area 801 is formed between the second group of retainer rings 402 and the first group of retainer rings 401; the bottom of the primary screening area 801 is provided with a screening hole 803.
3. The multi-disc combined granulation method for scale production of granular bio-organic fertilizer according to claim 2, characterized in that: a secondary granulation zone 702 is formed between the third group of retainer rings 403 and the second group of retainer rings 402; a secondary screening area 802 is formed between the fourth set of retaining rings 404 and the third set of retaining rings 403; the bottom of the secondary screening area 802 is provided with a screening hole 803.
4. The multi-disc combined granulation method for scale production of granular bio-organic fertilizer according to claim 3, characterized in that: a primary material return area 901 is formed inside the first group of sealing rings 601; the screen holes 803 of the primary screening area 801 are communicated with the primary material return area 901; a secondary material return area 902 is formed between the first group of sealing rings 601 and the second group of sealing rings 602; the screen holes 803 of the secondary screening zone 802 are communicated with a secondary feed-back zone 902.
5. The multi-disc combined granulation method for scale production of granular bio-organic fertilizer according to claim 4, characterized in that: a primary feed back outlet 903 is formed at the bottom of the primary feed back area 901; a secondary feed-back outlet 904 is arranged at the bottom of the secondary feed-back area 902; and a material distributing pipe 905 is arranged on one side of the bottom of the material collecting disc 6 and used for conveying raw materials of the primary material return outlet 903 and the secondary material return outlet 904 in a classified mode.
6. The multi-disc combined granulation method for scale production of granular bio-organic fertilizer according to claim 3, characterized in that: a fixed frame 502 is arranged at the top of the revolving frame 5; two groups of scraping plates 503 are arranged on the fixed frame 502; two sets of scrapers 503 are disposed above and inside the primary granulation zone 701 and the secondary granulation zone 702, respectively.
7. The multi-disc combined granulation method for the scale production of granular bio-organic fertilizer according to the claims 1-6, characterized in that: the production steps of the dual-core controlled release fertilizer are as follows:
slow release fertilizer raw materials are added into the primary granulation area 701;
the core fertilizer 101 is prepared by rotating the slow release fertilizer raw material in a primary granulation zone 701;
the kernel fertilizer 101 passes through the first group of check rings 401 from the primary granulation area 701 and enters the primary screening area 801 to be screened;
the screened kernel fertilizer 101 passes through the second group of retainer rings 402 and enters a secondary granulation area 702;
organic fertilizer raw materials or compound fertilizer raw materials are added into the secondary granulation area 702, and the outer core fertilizer 102 is wrapped outside the inner core fertilizer 101 to prepare the dual-core controlled release fertilizer 1;
the binuclear controlled release fertilizer 1 passes through the third group of retainer rings 403 and enters the secondary screening area 802 for screening;
the screened dual-core controlled release fertilizer 1 passes through the fourth group of retainer rings 404 and falls onto a conveyor belt, and then is dried by a dryer, and finally weighed and bagged.
8. The multi-disc combined granulation method for the scale production of granular bio-organic fertilizer according to the claims 1-7, characterized in that: the slow release fertilizer raw materials screened out by the primary screening area 801 enter a primary material returning area 901, then fall onto a conveying belt through a primary material returning outlet 903 and a material distributing pipe 905, and are backfilled into a primary granulation area 701.
9. The multi-disc combined granulation method for the scale production of granular bio-organic fertilizer according to the claims 1-7, characterized in that: organic fertilizer raw materials or compound fertilizer raw materials screened out by the secondary screening area 802 enter a secondary material returning area 902, then fall onto a conveying belt through a secondary material returning outlet 904 and a material distributing pipe 905, and are backfilled to a secondary granulation area 702.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114044727A (en) * | 2021-11-13 | 2022-02-15 | 王永刚 | Production method of continuous inorganic coated functional fertilizer |
| CN116274255A (en) * | 2023-01-30 | 2023-06-23 | 淮南东辰固废利用有限公司 | Production equipment and production process for producing cat litter by using coal-based solid waste |
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| CN116274255A (en) * | 2023-01-30 | 2023-06-23 | 淮南东辰固废利用有限公司 | Production equipment and production process for producing cat litter by using coal-based solid waste |
| CN116274255B (en) * | 2023-01-30 | 2024-01-26 | 淮南东辰固废利用有限公司 | Production equipment and production process for producing cat litter by using coal-based solid waste |
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