Processing technology of compound fertilizer containing algal enzyme

Abstract

The invention discloses a processing technology of a compound fertilizer containing algal enzyme, which comprises the following steps: firstly, uniformly melting and mixing an algal enzymolysis extract and a compound fertilizer, then introducing into a high tower, granulating by using a granulating mechanism, then reversely contacting with cold air for cooling for the first time in the falling process of granules, and then cooling to 80-90 DEG C, carrying out coating treatment by using a spraying mechanism, and finally, continuously falling the granules to be in reverse contact with cold air for the second time, and cooling to room temperature. According to the invention, the screening process is reduced, so that the algal enzyme-containing molten material is subjected to four processes of granulation, primary cooling, film coating and secondary cooling in the falling process, high-quality processing production of the compound fertilizer is realized, and energy conservation and high efficiency are realized.

Description

Technical Field

[0001] The invention relates to the technical field of compound fertilizers, in particular to a processing technology of compound fertilizers containing seaweed enzymes. Background Art

[0002] Seaweed enzyme compound fertilizer is a new product that combines seaweed enzymatic extract with conventional fertilizers. The seaweed enzymatic extract contains natural active substances such as polysaccharides, gibberellins, and indoleacetic acid, which can stimulate seed germination, root development, and leaf chlorophyll synthesis. The alginic acid and mucopolysaccharides in the seaweed extract can form a network structure around the root system, adsorb nutrients and slowly release them, reducing nitrogen fertilizer volatilization by more than 40% and increasing the utilization rate of phosphorus fertilizer from 10% to 30%. Seaweed enzyme compound fertilizer activates crop stress resistance genes, improves drought resistance, cold resistance, and salt and alkali resistance, increases soil aggregate structure, improves water and fertilizer retention, balances pH, and promotes the reproduction of beneficial microorganisms. Long-term use can alleviate soil compaction and salinization problems and reduce environmental pollution caused by chemical fertilizers. The natural ingredients are harmless to humans and animals, meet green agriculture standards, mix well with NPK fertilizers and pesticides, are resistant to high temperatures and acids and alkalis, and are suitable for high-tower melt granulation.

[0003] Patent CN 112321372 A discloses a method for adding enzymatically hydrolyzed seaweed extract to urea-based high-tower compound fertilizer. First, urea is added to a urea melting tank for melting. After the temperature is controlled and the urea is completely melted, the urea melt is introduced into a primary mixing tank. Monoammonium phosphate, potassium sulfate, ammonium sulfate, and potassium chloride are added to the primary mixing tank. After the raw materials are evenly mixed, the slurry is introduced into a secondary mixing tank. The enzymatically hydrolyzed seaweed extract is added to the secondary mixing tank. The slurry in the secondary mixing tank is granulated with a high-tower nozzle, screened, and packaged. This process uses existing urea-based high-tower nozzle granulation. This type of high tower can only perform granulation, but cannot perform screening and coating treatment. It requires additional process equipment to assist and is not suitable for slow-release fertilizers. At the same time, in order to prevent the molten particles ejected from the nozzle from sticking to the wall, a special coating is generally applied to the inner wall of the tower, which undoubtedly increases construction costs. In addition, nozzle granulation uses centrifugal force granulation, and the particle size is relatively dispersed due to the stirring effect and the different interactions between the molecules of the substance.

[0004] Patent CN118286961A discloses a high-tower granulation coating spray mechanism, process and its application in fully water-soluble compound fertilizers. By combining the interval feeding mechanism with the atomizing spray mechanism, a spray coating treatment process in the synchronous screening and falling process is realized. However, this process still does not effectively solve the problem of uneven particles in high-tower granulation. Coating is still required after screening. The particle temperature during the screening and coating processes is low, and the large particles after screening consume high energy for re-melting processing. At the same time, the low-temperature particles are not conducive to the coating reaction and solidification, which reduces the coating treatment efficiency. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a processing technology for compound fertilizer containing seaweed enzyme to solve the problems of uneven granulation, inability to directly coat the compound fertilizer and high energy consumption in the production process of molten seaweed enzyme in the prior art.

[0006] The purpose of the present invention is achieved through the following technical solution: a processing technology of compound fertilizer containing seaweed enzyme, comprising the following steps: S1. The seaweed enzymatic extract and compound fertilizer are melted and mixed evenly and then passed into a high tower using a granulation mechanism for granulation; S2. The pellets are cooled by the first reverse contact with the cold air during the falling process; S3. Cool down to 80-90°C and use a spray mechanism to coat the film; S4. The pellets continue to fall and come into contact with the cold air for the second time until they cool to room temperature.

[0007] Preferably, the high tower includes a tower body, a granulation mechanism, an air-isolating screen plate, and a spray mechanism. The granulation mechanism is installed on the top of the tower body, the air-isolating screen plate is installed in the middle of the tower body and divides the tower body into a first cooling section and a second cooling section. The spray mechanism is installed between the air-isolating screen plate and the bottom of the tower body. The tower body is provided with a first cold air inlet, a first cold air outlet, a second cold air inlet, a second cold air outlet, and a discharge port. The first cold air inlet is arranged at the lower part of the first cooling section, the first cold air outlet is arranged at the upper part of the first cooling section, the second cold air inlet is arranged at the lower part of the second cooling section, the second cold air outlet is arranged at the upper part of the second cooling section, and the discharge port is arranged at the bottom of the tower body.

[0008] Preferably, the granulation mechanism includes a melting cylinder, a first rotating shaft, a first discharging plate, a baffle plate, an air jet plate, an air baffle plate, an air equalizing ring, and a high-pressure air pipe. The first discharging plate is arranged below the bottom surface of the melting cylinder. A plurality of through holes capable of accommodating cylindrical molten material are opened on the first discharging plate. The first rotating shaft passes through the first discharging plate and is rotatably connected thereto. The baffle plate and the air jet plate are respectively fixedly connected to the second rotating shaft. The first air jet plate and the baffle plate are respectively located on the upper surface and the lower surface of the first discharging plate. The combined shape of the plate surfaces of the first air jet plate and the baffle plate is the same as that of the first discharging plate. There is an inner portion of the air jet plate A jet cavity is provided, and an exhaust opening corresponding to the through hole is provided on the lower surface of the jet plate, and an air inlet opening is provided on the arc surface of the jet plate. The air baffle arc plate and the arc surface of the jet plate together form a circular ring. The air equalizing ring is sleeved outside the jet plate and the air baffle arc plate, and the lower part of the air equalizing ring is sealed and fixedly connected to the first discharge plate, and the upper part of the air equalizing ring is sealed and fixedly connected to the melting tube. An air equalizing cavity is provided in the air equalizing ring, and an air outlet hole is provided around the inner circumference of the air equalizing ring, and the air outlet hole matches the air inlet opening. The high-pressure air pipe is connected to the air equalizing cavity, and the air equalizing ring is fixedly connected to the inner surface of the tower body.

[0009] Preferably, a feed auger, a second rotating shaft, and a second discharge plate are provided in the melting cylinder. The second discharge plate has the same structure as the first discharge plate. The first rotating shaft passes through the second discharge plate and is rotatably connected to it. The second discharge plate is sealed and fixedly connected to the upper part of the air-equalizing ring and is located above the air-jet plate. The second rotating shaft is mounted on the first rotating shaft and extends to the second discharge plate. The feed auger is fixedly connected to the second rotating shaft.

[0010] Preferably, the bottom end of the first rotating shaft is coaxially fixedly connected to the adjusting column, the circumferential surface of the adjusting column is provided with a corrugated groove connected end to end, the adjusting column is sleeved with an adjusting ring, the inner surface of the adjusting ring is evenly spaced and a plurality of limit blocks are provided, the limit blocks are fixedly connected to the adjusting ring, and a lifting rod is provided outside the adjusting ring, the tower body is provided with a first retaining ring, a second retaining ring, a first spring, and a second spring, the first retaining ring and the second retaining ring are respectively connected to the inner wall of the tower body, the first retaining ring and the second retaining ring are respectively located above and below the air isolation screen plate, the upper part of the lifting rod is fixedly connected to the adjusting ring, the lower part of the lifting rod vertically passes through the first retaining ring, the air isolation screen plate, and the second retaining ring in sequence, the lifting rod is slidably connected to the first retaining ring and the second retaining ring respectively, the lifting rod is fixedly connected to the air isolation screen plate, the first spring and the second spring are both sleeved on the lifting rod, the first spring is located between the first retaining ring and the air isolation screen plate, and the second spring is located between the second retaining ring and the air isolation screen plate.

[0011] Preferably, a first sealing ring and a second sealing ring are provided on the air-isolating screen plate, there are two first sealing rings and they are respectively located on the upper and lower surfaces of the air-isolating screen plate, there are two second sealing rings and they are respectively sleeved outside the first sealing ring, the first sealing ring and the second sealing ring are connected to each other in an up and down sliding manner, and the second sealing ring is fixedly connected to the first retaining ring and the second retaining ring respectively.

[0012] Preferably, the spray mechanism includes a circular nozzle and a main liquid inlet pipe, the circular nozzle is provided with a plurality of inward-facing nozzles at intervals, and the main liquid inlet pipe passes through the tower body and is connected to the circular nozzle.

[0013] Preferably, the circular nozzle is provided with multiple groups of reciprocating pushing mechanisms, and the reciprocating pushing mechanisms include a support plate, a third spring, and a pushing block. The support plate is sleeved outside the circular nozzle and is slidably connected to the circular nozzle, and the support plate is fixedly connected to the inner wall of the tower body. The pushing block is sleeved outside the circular nozzle and is fixedly connected to the inner wall of the tower body. The third spring is sleeved outside the circular nozzle and is located between the pushing block and the support plate. The pushing block is provided with an inclined surface, and the bottom end of the lifting rod extends to the inclined surface and pushes the pushing block to squeeze the third spring.

[0014] Preferably, the tower body is provided with a swing hole that allows the main liquid inlet pipe to rotate along with the circular nozzle, the main liquid inlet pipe is located in the swing hole, and the main liquid inlet pipe is provided with a flexible leak-proof air cover, the main liquid inlet pipe passes through the leak-proof air cover and is sealed therewith, and the leak-proof air cover is buckled outside the swing hole and is sealed to the tower body.

[0015] Preferably, a collecting plate is obliquely provided at the bottom of the tower body, and the discharge port is provided at the lowest point of the collecting plate.

[0016] The present invention has the following advantages: 1. A processing technology for compound fertilizer containing seaweed enzymes is provided, which completes the four processes of granulation, primary cooling, coating, and secondary cooling in a high tower. Compared with existing compound fertilizer production processes, this technology eliminates the need for additional screening and coating equipment, reducing factory floor space. Because coating is performed while the granules are still at a certain temperature, the coating reaction bonding and curing effect is better than low-temperature coating processes. 2. The high-tower granulation replaces the existing rotary nozzle granulation process. The first discharge plate is used to store a fixed amount of molten material and the granulation is completed through the high-pressure gas spraying in the jet plate. The volume of each pellet is the same, which improves the uniformity of the particle size, reduces the screening process steps of the pellets, and improves the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a half-section structure of the present invention; Figure 3 yes Figure 2 A local enlarged structural diagram of point A; Figure 4 yes Figure 2 A schematic diagram of the partially enlarged structure at point B; Figure 5 yes Figure 2 A schematic diagram of the partially enlarged structure at point C; Figure 6 It is a partial enlarged structural diagram of the connection of the air leakage prevention cover of the present invention; Figure 7 yes Figure 6 A schematic diagram of the half-section structure of the middle air leak shield; Figure 8 It is a schematic diagram of the internal structure of the present invention; Figure 9 This is a three-dimensional diagram of the positional relationship between the jet plate and the baffle plate of the present invention; Figure 10 It is a schematic diagram of the process of the present invention.

[0018] In the figure, 1, tower body; 2, air-isolating screen plate; 3, first cold air inlet; 4, first cold air outlet; 5, second cold air inlet; 6, second cold air outlet; 7, discharge port; 8, melting cylinder; 9, first discharge plate; 10, first rotating shaft; 11, second rotating shaft; 12, feeding auger; 13, feed port; 14, second discharge plate; 15, jet plate; 16, jet cavity; 17, air inlet opening; 18, exhaust opening; 19, air baffle plate; 20, air-distributing ring; 21, air-distributing cavity; 22, air outlet; 23, high-pressure air pipe; 24, support Strut; 25. Baffle plate; 26. Adjusting column; 27. Adjusting ring; 28. Limit block; 29. ​​Corrugated groove; 30. Lifting rod; 31. First baffle ring; 32. Second baffle ring; 33. First spring; 34. Second spring; 35. First sealing ring; 36. Second sealing ring; 37. Spray head; 38. Circular nozzle; 39. Support plate; 40. Third spring; 41. Push block; 42. Inclined surface; 43. Swing hole; 44. Main liquid inlet pipe; 45. Anti-leakage air cover; 46. Collecting plate; 47. First motor; 48. Second motor. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0021] A processing technology for compound fertilizer containing seaweed enzyme, such as Figure 10 As shown, it includes the following steps: S1. First, nitrogen, phosphorus, potassium and urea compound fertilizers are added to a melting tank and heated to 110-130 ° C to mix and stir them evenly. Then, a commercially available seaweed enzymatic extract is added to the melting tank, melted and mixed evenly, and then pumped into a designed high tower using a granulation mechanism for granulation; S2. The pellets formed by granulation are cooled by the first reverse contact with the cold air during the falling process in the high tower. The reverse contact can also slow down the falling speed of the pellets. S3. After cooling to 80-90°C, use a spray mechanism to coat the film. Control the temperature to avoid excessively high temperatures, which may cause the inner layer and the coating layer to shrink differently, leading to disintegration and cracking. S4. The granular material continues to fall and contacts the cold air for the second time until it cools down to room temperature, thus forming a compound fertilizer.

[0022] The realization of the above continuous process relies on the unique high tower of the present invention, such as Figure 1 、 Figure 2 、 Figure 8 As shown, the high tower includes a tower body 1, a granulation mechanism, an air separation screen plate 2, and a spray mechanism. The granulation mechanism is installed on the top of the tower body 1. The granulation mechanism can select an existing rotary nozzle granulation. The distance between each group of nozzles and the distance between the nozzles and the inner wall of the tower body 1 need to be controlled to avoid mixing to increase the particle size or adhere to the inner wall. The air-tightening screen plate 2 is a circular plate structure with a plurality of holes on it for allowing the passage of granular materials. The aperture is controlled to be 1-2 mm larger than the granular materials. The granular materials can block the tower body 1 at intervals during the falling process, forming a partition that hinders the upward and downward exchange of gases, while ensuring the normal passage of the granular materials. The air-tightening screen plate 2 is installed in the middle of the tower body 1 and divides the tower body 1 into a first cooling section and a second cooling section. The spray mechanism is installed between the air-tightening screen plate 2 and the bottom of the tower body 1 to avoid being installed close to the air-tightening screen plate 2. This can prevent the uncured coating liquid from floating up and blocking the holes on the air-tightening screen plate 2. The tower body 1 is provided with a first cold air inlet 3, a first cold air outlet 4, a second cold air inlet 5, a second cold air outlet 6, and a discharge port 7. The first cold air inlet 3 is opened at the lower part of the first cooling section. The first cold air outlet 4 is opened at the upper part of the first cooling section, and the discharged cold air enters from the first cold air inlet 3 and exits from the first cold air outlet 4, forming the first cooling of the granular material. The second cold air inlet 5 is opened at the lower part of the second cooling section, and the second cold air outlet 6 is opened at the upper part of the second cooling section. The closer the second cold air outlet 6 is to the air-isolating screen plate 2, the better the installation effect. The high pressure discharged from the first cold air inlet 3 and the low pressure at the second cold air outlet 6 can form a large air pressure difference, which is conducive to the granular material to quickly pass through the air-isolating screen plate 2 under the action of pressure; the discharge port 7 is opened at the bottom of the tower body 1, and the collecting plate 46 is installed obliquely at the bottom of the tower body 1. The discharge port 7 is set at the lowest point of the collecting plate 46, and the second cold air inlet 5 is opened at the highest point of the collecting plate 46.

[0023] The present invention designs a unique granulation mechanism which does not stick to the inner wall and granulates evenly. Figure 3As shown, the granulation mechanism includes a melting cylinder 8, a feeding auger 12, a second rotating shaft 11, a second discharging plate 14, a first rotating shaft 10, a first discharging plate 9, a baffle plate 25, an air jet plate 15, an air baffle arc plate 19, an air equalizing ring 20, a high-pressure air pipe 23, a support rod 24, a first motor 47, and a second motor 48. The first discharging plate 9 and the second discharging plate 14 have the same structure and are circular plates of a certain thickness. A plurality of through holes that can accommodate cylindrical molten material are provided on the first discharging plate 9 and the second discharging plate 14. The molten material of the same volume sprayed out of the through holes can form particles with the same particle size during the falling process, which is also an important feature to ensure uniform particle size. A feed port 13 is provided above the melting cylinder 8. The feed port 13 is connected to the compound fertilizer molten material transported by the pump. The second discharging plate 14 is installed on the bottom surface of the melting cylinder 8. The second rotating shaft 11 is mounted on the first rotating shaft 10 and extends to the second discharging plate 14. The second The rotating shaft 11 is connected to the first rotating shaft 10 coaxially, and the first rotating shaft 10 is driven to rotate by the gear meshing of the first motor 47. The second rotating shaft 11 is driven to rotate by the gear meshing of the second motor 48. The feeding auger 12 is fixedly connected to the second rotating shaft 11. The feeding auger 12 is used to convey the molten material downward through the second discharging plate 14. The first discharging plate 9 is installed below the bottom surface of the melting cylinder 8 and is located directly below the second discharging plate 14. The first rotating shaft 10 passes through the second discharging plate 14 and the first discharging plate 9 in sequence and is rotatably connected thereto. The jet plate 15 and the baffle plate 25 are respectively located on the upper surface and the lower surface of the first discharging plate 9. The combined shape of the plate surfaces of the first jet plate 15 and the baffle plate 25 is the same as that of the first discharging plate 9. The baffle plate 25 and the jet plate 15 are both semicircular. The height of the jet plate 15 is equal to the distance between the second discharging plate 14 and the first discharging plate 9. A jet cavity 16 is provided on the jet plate 15. Figure 8 As shown, the lower surface of the jet plate 15 is provided with exhaust openings 18 corresponding to the through holes, and high-pressure gas is continuously ejected into the through holes through the exhaust openings 18 to push out the molten material inside to complete the granulation. Figure 9As shown, the arc surface of the jet plate 15 is provided with a long strip of air inlet opening 17, the air baffle plate 19 and the arc surface of the jet plate 15 together form a circular ring, the air balancing ring 20 is set outside the jet plate 15 and the air baffle plate 19, the lower part of the air balancing ring 20 is sealed and fixedly connected to the first discharge plate 9, the upper part of the air balancing ring 20 is sealed and fixedly connected to the melting cylinder 8 and the second discharge plate 14, an annular air balancing cavity 21 is provided in the air balancing ring 20, and an air outlet hole 22 is provided on the inner circumference of the air balancing ring 20, which is surrounded by a circle. The heights are matched, the high-pressure air pipe 23 is connected to the air-equalizing cavity 21, the air-equalizing ring 2 is connected to the inner surface of the fixed tower body 1 through four support rods 24, and the baffle plate 25 and the jet plate 15 are respectively close to the upper and lower surfaces of the first discharge plate 9, which can not only avoid the large vibration caused by the eccentricity of the first rotating shaft 10, but also the baffle plate 25 and the jet plate 15 are respectively fixedly connected to the opposite sides of the second rotating shaft 11, and when the jet plate 15 sprays downward for granulation, the baffle plate 25 can prevent the molten material from continuously spraying downward through the first discharge plate 9.

[0024] like Figure 3 As shown, the bottom end of the first rotating shaft 10 extends downward and is coaxially fixedly connected to the adjusting column 26. The rotation of the first rotating shaft 10 drives the adjusting column 26 to rotate. The circumferential surface of the adjusting column 26 is provided with corrugated grooves 29 connected end to end. An adjusting ring 27 is installed on the outer sleeve of the adjusting column 26. Four limit blocks 28 are evenly spaced and installed on the inner surface of the adjusting ring 27. The limit blocks 28 are integrally connected to the adjusting ring 27. Four lifting rods 30 are installed outside the adjusting ring 27. The lifting rod 30 has an inverted L-shaped structure. A first retaining ring 31, a second retaining ring 32, a first spring 33, and a second spring 34 are installed in the tower body 1. The first retaining ring 31 and the second retaining ring 32 are respectively connected to the inner wall of the fixed tower body 1. The first retaining ring 31 and the second retaining ring 32 are respectively connected to the inner wall of the fixed tower body 1. The ring 31 and the second retaining ring 32 are respectively located above and below the air trap sieve plate 2. The upper part of the lifting rod 30 is integrally welded with the adjusting ring 27. The lower part of the lifting rod 30 vertically passes through the first retaining ring 31, the air trap sieve plate 2, and the second retaining ring 32 in sequence. The lifting rod 30 is slidably connected with the first retaining ring 31 and the second retaining ring 32 respectively. The first retaining ring 31 and the second retaining ring 32 serve to limit the rotation of the lifting rod 30. The adjusting ring 27 is driven by the rotation of the adjusting column 26 and is restricted by the corrugated groove 29, so that the adjusting ring 27 moves back and forth. The lifting rod 30 is fixedly connected to the air trap sieve plate 2, and the adjusting ring 27 drives the air trap sieve plate 2 to reciprocate up and down. like Figure 4As shown, the first spring 33 and the second spring 34 are both mounted on the lifting rod 30 to limit the left and right movement of the spring. The first spring 33 is located between the first baffle ring 31 and the air-trapping screen plate 2, and the second spring 34 is located between the second baffle ring 32 and the air-trapping screen plate 2. The first spring 33 and the second spring 34 support and buffer the up and down movement of the air-trapping screen plate 2 to reduce the pressure between the limit block 28 and the corrugated groove 29; a first sealing ring 35 and a second sealing ring 36 are installed on the air-trapping screen plate 2, and there are two first sealing rings 35 and they are respectively located on the upper and lower surfaces of the air-trapping screen plate 2, and there are two second sealing rings 36 respectively mounted outside the first sealing ring 35. The first sealing ring 35 and the second sealing ring 36 are slidably connected up and down, and the second sealing ring 36 is fixedly connected to the first baffle ring 31 and the second baffle ring 32 respectively. The first sealing ring 35, the second sealing ring 36, the first baffle ring 31, and the second baffle ring 32 together form a protective shell that prevents granular material from entering the gap between the compression springs, thereby ensuring long-term operation of the equipment; like Figure 5 As shown, the spray mechanism includes a circular nozzle 38 and a main liquid inlet pipe 44. A plurality of inward-facing nozzles 37 are arranged at intervals on the circular nozzle 38. The main liquid inlet pipe 44 passes through the tower body 1 and is connected to the circular nozzle 38. If the nozzle 37 is fixedly installed, the sprayed coating agent cannot evenly coat the granular material, which easily causes the problem of inconsistent coating thickness. The nozzle 37 is designed to be able to reciprocate at a certain angle, which can effectively reduce the problem of inconsistent coating thickness. The mechanism for achieving the rotation at a certain angle is a reciprocating push mechanism. The reciprocating push mechanism is 4 groups, and the reciprocating push mechanism includes a support plate 39, a third spring 40, a push The movable block 41 and the support plate 39 are sleeved on the outside of the circular nozzle 38 and are slidably connected to the circular nozzle 38. The support plate 39 supports and limits the circular nozzle 38. The support plate 39 is fixedly welded to the inner wall of the tower body 1. The pushing block 41 is sleeved on the outside of the circular nozzle 38 and is fixedly connected to it. The third spring 40 is sleeved on the outside of the circular nozzle 38 and is located between the pushing block 41 and the support plate 39. The pushing block 41 is provided with a slope 42. The bottom end of the lifting rod 30 extends to the slope 42 and pushes the pushing block 41 to squeeze the third spring 40. The lifting rod 30 moves upward, and the third spring 40 rebounds to push the pushing block 41 to squeeze the lifting rod 30.

[0025] like Figure 6 、 Figure 7As shown, the rotation of the circular nozzle 38 will inevitably drive the main liquid inlet pipe 44 to rotate. A swing hole 43 is provided on the tower body 1 to allow the main liquid inlet pipe 44 to rotate with the circular nozzle 38. The swing hole 43 is arc-shaped. The main liquid inlet pipe 44 is located in the swing hole 43 and follows the reciprocating movement of the circular nozzle 38. The setting of the swing hole 43 will cause internal gas to be ejected. A flexible leak-proof air cover 45 is installed on the main liquid inlet pipe 44. The leak-proof air cover 45 is a rubber cushion. The structure of the leak-proof air cover 45 is similar to the dust cover used for a vehicle gear lever. The main liquid inlet pipe 44 passes through the leak-proof air cover 45 and is sealed therewith. The leak-proof air cover 45 is buckled outside the swing hole 43 and is sealed with the tower body 1. The installation of the leak-proof air cover 45 ensures the normal movement of the main liquid inlet pipe 44 and avoids pollution caused by internal gas ejection.

[0026] Working principle: The molten material enters the melting cylinder 8 through the feed port 13, and is squeezed into the space between the first discharge plate 9 and the second discharge plate 14 by the rotation of the feeding auger 12. Due to the blockage of the baffle plate 25, part of the molten material is temporarily stored in the through hole of the first discharge plate 9. The high-pressure air ejected from the high-pressure air pipe 23 enters the jet chamber 21 through the uniform air cavity 21, the air outlet 22, and the air inlet opening 17 in turn, and is ejected downward through the exhaust opening 18. The first motor 47 drives the first rotating shaft 10 to rotate, and the first rotating shaft 10 drives the jet plate 15, the air baffle plate 19, and the baffle plate 25 to rotate. When the exhaust opening 18 rotates to above the through hole, the molten material in the through hole is quickly ejected downward under the action of the high-pressure gas and forms particles in the falling process. The continuous rotation of the first rotating shaft 10 drives the There is always a part of the through holes being squeezed and filled, and a part of the through holes being granulated by high-pressure gas jet, thereby realizing the continuous rotation granulation function; the rotation of the first rotating shaft 10 drives the adjusting column 26 to rotate, and the lifting rod 30 cannot rotate due to the limiting effect of the first baffle ring 31 and the second baffle ring 32, and makes a reciprocating motion up and down under the action of the corrugated groove 29 of the adjusting column 26, and the lifting rod 30 drives the air-trapping screen plate 2 to make a reciprocating motion up and down, accelerating the falling of the granular material on the air-trapping screen plate 2, and the synchronous downward movement of the lifting rod 30 causes its bottom end to continuously push the push block and the circular nozzle 38 to rotate, and the rotation of the circular nozzle 38 expands the spray range of the sprayed coating liquid, and the upward movement of the lifting rod 30 causes the third spring 40 to push the push block and the circular nozzle 38 to reset, and this is repeated, thereby improving the uniform coating effect of the granular material.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A processing technology for compound fertilizer containing seaweed enzyme, characterized in that: The following steps are included: S1. The seaweed enzymatic extract and compound fertilizer are melted and mixed evenly and then passed into a high tower using a granulation mechanism for granulation; S2. The pellets are cooled by the first reverse contact with the cold air during the falling process; S3. Cool down to 80-90°C and use a spray mechanism to coat the film; S4. The pellets continue to fall and come into contact with the cold air for the second time until they cool to room temperature.

2. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 1, characterized in that: The high tower comprises a tower body (1), a granulation mechanism, an air separation screen plate (2), and a spray mechanism. The granulation mechanism is installed at the top of the tower body (1). The air separation screen plate (2) is installed in the middle of the tower body (1) and divides the tower body (1) into a first cooling section and a second cooling section. The spray mechanism is installed between the air separation screen plate (2) and the bottom of the tower body (1). The tower body (1) is provided with a first cold air inlet (3), a first cold air outlet (4), a second cold air inlet (5), a second cold air outlet (6), and a discharge port (7). The first cold air inlet (3) is provided at the lower part of the first cooling section, the first cold air outlet (4) is provided at the upper part of the first cooling section, the second cold air inlet (5) is provided at the lower part of the second cooling section, the second cold air outlet (6) is provided at the upper part of the second cooling section, and the discharge port (7) is provided at the bottom of the tower body (1).

3. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 2, characterized in that: The granulation mechanism includes a melting barrel (8), a first rotating shaft (10), a first discharge plate (9), a baffle plate (25), an air jet plate (15), an air baffle plate (19), an air equalizing ring (20), and a high-pressure air pipe (23). The first discharge plate (9) is arranged below the bottom surface of the melting barrel (8). The first discharge plate (9) is provided with a plurality of through holes capable of accommodating cylindrical molten material. The first rotating shaft (10) passes through the first discharge plate (9) and is rotatably connected thereto. The baffle plate (25) and the air jet plate (15) are respectively fixedly connected to the second rotating shaft (11). The first air jet plate (15) and the baffle plate (25) are respectively located on the upper surface and the lower surface of the first discharge plate (9). The plate surface combination shape of the first air jet plate (15) and the baffle plate (25) is the same as that of the first discharge plate (9). The air jet plate (15) is provided with an air jet cavity ( 16), the lower surface of the jet plate (15) is provided with an exhaust opening (18) corresponding to the through hole, the arc surface of the jet plate (15) is provided with an air inlet opening (17), the air baffle arc plate (19) and the circular arc surface of the jet plate (15) together form a circular ring, the air equalizing ring (20) is sleeved outside the jet plate (15) and the air baffle arc plate (19), the lower part of the air equalizing ring (20) is sealed and fixedly connected to the first discharge plate (9), the upper part of the air equalizing ring (20) is sealed and fixedly connected to the melting tube (8), an air equalizing cavity (21) is provided in the air equalizing ring (20), and an air outlet hole (22) is provided around the inner circumference of the air equalizing ring (20), the air outlet hole (22) matches the air inlet opening (17), the high-pressure air pipe (23) is connected to the air equalizing cavity (21), and the air equalizing ring (20) is fixedly connected to the inner surface of the tower body (1).

4. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 3, characterized in that: The melting cylinder (8) is provided with a feeding auger (12), a second rotating shaft (11), and a second discharge plate (14). The second discharge plate (14) has the same structure as the first discharge plate (9). The first rotating shaft (10) passes through the second discharge plate (14) and is rotatably connected thereto. The second discharge plate (14) is sealed and fixedly connected to the upper part of the gas equalizing ring (20) and is located above the air injection plate (15). The second rotating shaft (11) is mounted on the first rotating shaft (10) and extends to the second discharge plate (14). The feeding auger (12) is fixedly connected to the second rotating shaft (11).

5. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 3, characterized in that: The bottom end of the first rotating shaft (10) is coaxially fixedly connected to the adjusting column (26), and a corrugated groove (29) connected end to end is provided on the circumferential surface of the adjusting column (26). An adjusting ring (27) is provided on the outer sleeve of the adjusting column (26), and a plurality of limit blocks (28) are evenly spaced on the inner surface of the adjusting ring (27). The limit blocks (28) are fixedly connected to the adjusting ring (27). A lifting rod (30) is provided on the outer side of the adjusting ring (27). A first retaining ring (31), a second retaining ring (32), a first spring (33), and a second spring (34) are provided in the tower body (1). The first retaining ring (31) and the second retaining ring (32) are respectively connected to the inner wall of the tower body (1). The first retaining ring (31) and the second retaining ring (32) are respectively located at the inner wall of the tower body (1). Above and below the air separation screen plate (2), the upper part of the lifting rod (30) is fixedly connected to the adjusting ring (27), and the lower part of the lifting rod (30) vertically passes through the first baffle ring (31), the air separation screen plate (2), and the second baffle ring (32) in sequence. The lifting rod (30) is slidably connected to the first baffle ring (31) and the second baffle ring (32) respectively. The lifting rod (30) is fixedly connected to the air separation screen plate (2). The first spring (33) and the second spring (34) are both mounted on the lifting rod (30). The first spring (33) is located between the first baffle ring (31) and the air separation screen plate (2), and the second spring (34) is located between the second baffle ring (32) and the air separation screen plate (2).

6. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 5, characterized in that: A first sealing ring (35) and a second sealing ring (36) are provided on the air separation screen plate (2). The first sealing rings (35) are two and are respectively located on the upper and lower surfaces of the air separation screen plate (2). The second sealing rings (36) are two and are respectively sleeved outside the first sealing rings (35). The first sealing ring (35) and the second sealing ring (36) are connected to each other in an upward and downward sliding manner. The second sealing ring (36) is respectively fixedly connected to the first retaining ring (31) and the second retaining ring (32).

7. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 5, characterized in that: The spray mechanism comprises a circular nozzle (38) and a main liquid inlet pipe (44). A plurality of inward-facing nozzles (37) are arranged at intervals on the circular nozzle (38). The main liquid inlet pipe (44) passes through the tower body (1) and is connected to the circular nozzle (38).

8. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 7, characterized in that: The circular nozzle (38) is provided with a plurality of reciprocating propulsion mechanisms, which include a support plate (39), a third spring (40), and a propulsion block (41). The support plate (39) is sleeved outside the circular nozzle (38) and is slidably connected to the circular nozzle (38). The support plate (39) is fixedly connected to the inner wall of the tower body (1). The propulsion block (41) is sleeved outside the circular nozzle (38) and is fixedly connected to the circular nozzle (38). The third spring (40) is sleeved outside the circular nozzle (38) and is located between the propulsion block (41) and the support plate (39). The propulsion block (41) is provided with an inclined surface (42). The bottom end of the lifting rod (30) extends to the inclined surface (42) and pushes the propulsion block (41) to squeeze the third spring (40).

9. The processing technology of a compound fertilizer containing seaweed enzyme according to claim 8, characterized in that: The tower body (1) is provided with a swing hole (43) allowing the main liquid inlet pipe (44) to rotate along with the circular nozzle (38); the main liquid inlet pipe (44) is located in the swing hole (43); a flexible anti-leakage air cover (45) is provided on the main liquid inlet pipe (44); the main liquid inlet pipe (44) passes through the anti-leakage air cover (45) and is sealed therewith; the anti-leakage air cover (45) is buckled outside the swing hole (43) and is sealed therewith.

10. The processing technology of the compound fertilizer containing seaweed enzyme according to claim 2, characterized in that: A material collecting plate (46) is provided at an angle at the bottom of the tower body (1), and the material discharge port (7) is provided at the lowest point of the material collecting plate (46).

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