Anti-caking prilling device for instant compound fertilizer

Abstract

The utility model discloses a kind of anti-caking instant composite fertilizer granulating device, including distributing box and screening box, the top of distributing box is provided with screening box, the inside of screening box is movably provided with sieve cylinder, the inner wall of screening box is symmetrically movably installed with multiple groups of limiting wheel of equal interval, the outer wall of the both ends of sieve cylinder is provided with limiting ring, and limiting ring is slidably connected with limiting wheel, the outer wall of screening box is provided with servo motor, and the output of servo motor is installed with driving shaft, and the surface of driving shaft is provided with gear, the surface of sieve cylinder of gear side is provided with gear ring, and gear and gear ring are mutually engaged, the surface of sieve cylinder of gear ring side is provided with multiple groups of small sieve hole of equal interval. The utility model not only realizes the granulating production and drying of composite fertilizer quickly, facilitates the multi-stage classification screening of composite fertilizer particles, and improves the efficiency of composite fertilizer granulating production.

Description

Technical Field

[0001] This utility model relates to the field of compound fertilizer production technology, specifically to a granulation device for anti-caking and fast-dissolving compound fertilizer. Background Technology

[0002] Compound fertilizer refers to fertilizer containing two or more nutrients, mainly nitrogen, phosphorus, and potassium. Compound fertilizer has the advantages of comprehensive nutrition, fast fertilizer effect, and good effect. It is a high-efficiency fertilizer and is widely used in various crops. Compound fertilizer production often uses a rotary drum granulator for granulation. The rotary drum granulator is a key forming equipment in the compound fertilizer industry. It is suitable for cold and hot granulation and large-scale production of high, medium and low concentration compound fertilizers. It adopts a wet granulation process. After the base fertilizer is moistened by water or steam in the drum, it fully reacts chemically. Under liquid phase conditions, the rotation of the drum causes the material particles to be squeezed and agglomerated into balls.

[0003] However, traditional compound fertilizers need to be transported to a screening device for screening before being bagged after production. The screening device and the granulation device are separate, which results in wasted time in transporting fertilizers and affects the efficiency of compound fertilizer granulation production. In order to improve this situation, an anti-caking and fast-dissolving compound fertilizer granulation device is proposed.

[0004] For example, the anti-caking compound fertilizer centrifugal granulation device disclosed in the authorization announcement number CN212492804U includes a support column, a tank body fixedly installed on the top of the support column, a primary screening plate installed in the middle of the tank body, a splitting chamber provided above the primary screening plate, a discharge chamber provided below the primary screening plate, a discharge port provided on one side of the discharge chamber, a feed port provided on one side of the top of the tank body, a first bevel gear provided at one end of the drive shaft, a stirring and crushing rod installed through the middle section of the tank body, a secondary screening plate assembly provided below the primary screening plate in a slotted manner, the secondary screening plate assembly includes a secondary screening plate, a through hole opened on the surface of the secondary screening plate, slots provided on both sides of the secondary screening plate, a push-pull handle provided at the front end of the secondary screening plate, and a limit pin provided at the rear end of the secondary screening plate; Although it has solved the problem that the granulation size produced by the granulation device cannot be adjusted, and solved the problem that the traditional device structure is relatively complex and not conducive to the daily maintenance and repair of maintenance personnel; However, this does not solve the problem that existing granulation equipment is not conducive to the rapid granulation and drying of compound fertilizers, nor to the multi-level classification and screening of compound fertilizer particles, thus affecting the efficiency of compound fertilizer granulation production. Utility Model Content

[0005] The purpose of this invention is to provide an anti-caking, fast-dissolving compound fertilizer granulation device to solve the problems mentioned in the background art, such as the inconvenience of granulation devices for rapid granulation and drying of compound fertilizer, the difficulty in multi-level classification and screening of compound fertilizer particles, and the impact on the efficiency of compound fertilizer granulation production.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a granulation device for anti-caking, fast-dissolving compound fertilizer, comprising a distributing box and a screening box. The top of the distributing box is equipped with a screening box, and a sieve cylinder is movably arranged inside the screening box. Multiple sets of equal-spaced limiting wheels are symmetrically and movably installed on the inner wall of the screening box. Limiting rings are provided on the outer walls at both ends of the sieve cylinder, and the limiting rings are slidably connected to the limiting wheels. A servo motor is provided on the outer wall of the screening box, and a drive shaft is installed at the output end of the servo motor. A gear is provided on the surface of the drive shaft. A toothed ring is provided on the surface of the sieve cylinder on one side of the gear, and the gear and the toothed ring mesh with each other. Multiple sets of equal-spaced small sieve holes are provided on the surface of the sieve cylinder on one side of the toothed ring.

[0007] Preferably, the surface of the sieve cylinder on one side of the small sieve hole is provided with multiple sets of medium sieve holes at equal intervals, and the surface of the sieve cylinder on one side of the medium sieve hole is provided with multiple sets of large sieve holes at equal intervals.

[0008] Preferably, the material distribution box is provided with a support frame on its exterior, and the inner wall of the screen cylinder is provided with multiple sets of first guide strips at equal intervals.

[0009] Preferably, a rotary drum granulator is provided at the top of the support frame, and a liquid storage tank is provided at the top of the support frame on one side of the rotary drum granulator.

[0010] Preferably, a water pump is provided at the top of the storage tank, and a spray pipe is installed at the output end of the water pump, and the spray pipe extends into the interior of the rotary drum granulator.

[0011] Preferably, a heating box is provided at the top of the screening box, and a screw conveyor is provided inside the heating box. The feed inlet of the screw conveyor corresponds to the discharge outlet of the rotary drum granulator, and multiple sets of second guide strips with equal spacing are provided on the inner wall of the rotary drum granulator.

[0012] Preferably, the bottom end of the screw conveyor is provided with a connecting pipe, and the connecting pipe extends into the interior of the screen cylinder.

[0013] Preferably, the material distribution box is provided with three sets of equally spaced feeding frames inside, and the three sets of feeding frames correspond one-to-one with the small sieve hole, the medium sieve hole, and the large sieve hole, respectively.

[0014] Preferably, each of the material distribution boxes below the feeding frame is equipped with a belt conveyor, and a collection box is provided on the outer wall of the material distribution box.

[0015] Preferably, a PLC controller is provided on the outer wall of the support frame, and the output terminal of the PLC controller is electrically connected to the input terminal of the rotary drum granulator, water pump, belt conveyor, screw conveyor, heating box, and servo motor.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the granulation device not only realizes the rapid granulation and drying of compound fertilizer, and facilitates multi-level classification and screening of compound fertilizer particles, but also improves the efficiency of compound fertilizer granulation production.

[0017] (1) Urea, phosphate fertilizer, potassium fertilizer and other raw materials are crushed according to the formula so that the particle size of the raw materials reaches the appropriate range. The raw materials mixed according to the corresponding ratio have the effect of preventing agglomeration and quick dissolution. Then the mixed raw materials are poured into the rotary drum granulator. The raw materials are constantly turned over. At the same time, the water pump is turned on. The water pump sprays the binder and some liquid raw materials in the storage tank into the rotary drum granulator through the spray pipe. With the continuous rotation of the rotary drum granulator and the action of the binder, the material gradually agglomerates into granules. After the granules are formed, the compound fertilizer granules are conveyed to the screw conveyor under the action of the second guide bar. The screw conveyor drives the granules to move. During the movement of the granules, the heating box is turned on. The heating box provides heat to the screw conveyor to dry the compound fertilizer granules. The dried granules are conveyed to the inside of the screen cylinder through the connecting pipe to complete the granulation production of compound fertilizer. The above design can quickly granulate and dry compound fertilizer. (2) The servo motor drives the gear to rotate through the drive shaft, and the gear drives the screen cylinder to rotate through the gear ring. Under the guidance of the first guide bar, the compound fertilizer particles move. The compound fertilizer passes through the small screen hole, medium screen hole and large screen hole respectively. The aperture size of the three sets of screen holes is small screen hole < medium screen hole < large screen hole. Particles in the compound fertilizer with a diameter smaller than the corresponding screen hole aperture fall onto the belt conveyor through the feeding frame and are transported to the next production process by the belt conveyor. The larger lumpy fertilizer particles are transported from the screen cylinder to the collection box, which collects the lumpy fertilizer particles. The above design can classify and screen the compound fertilizer particles, improving the efficiency of compound fertilizer screening. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a frontal cross-sectional view of the present invention. Figure 3 This is a three-dimensional structural diagram of the collection box of this utility model; Figure 4 This is a front view cross-sectional structural diagram of the material distribution box of this utility model; Figure 5This is a three-dimensional perspective structural diagram of the screening box of this utility model.

[0019] In the diagram: 1. Support frame; 2. PLC controller; 3. Rotary drum granulator; 4. Spray pipe; 5. Water pump; 6. Storage tank; 7. Screening box; 8. Distribution box; 9. Belt conveyor; 10. Collection box; 11. Screen cylinder; 12. Feeding frame; 13. Connecting pipe; 14. Heating box; 15. Screw conveyor; 16. First guide bar; 17. Small screen hole; 18. Medium screen hole; 19. Large screen hole; 20. Servo motor; 21. Drive shaft; 22. Gear; 23. Gear ring; 24. Limiting ring; 25. Limiting wheel; 26. Second guide bar. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Example 1 Please see Figure 1-5This utility model provides an embodiment of a granulation device for an anti-caking, fast-dissolving compound fertilizer, comprising a distribution box 8 and a screening box 7. The screening box 7 is located at the top of the distribution box 8. A sieve cylinder 11 is movably arranged inside the screening box 7. Multiple sets of equally spaced limiting wheels 25 are symmetrically and movably installed on the inner wall of the screening box 7. Limiting rings 24 are provided on the outer walls at both ends of the sieve cylinder 11, and the limiting rings 24 are slidably connected to the limiting wheels 25. A servo motor 20 is provided on the outer wall of the screening box 7, and a drive shaft 21 is installed at the output end of the servo motor 20. A gear 22 is provided on the surface of the drive shaft 21. A toothed ring 23 is provided on the surface of the screen cylinder 11 on one side of the gear 22, and the gear 22 and the toothed ring 23 mesh with each other. A plurality of small screen holes 17 with equal spacing are provided on the surface of the screen cylinder 11 on one side of the toothed ring 23. A plurality of medium screen holes 18 with equal spacing are provided on the surface of the screen cylinder 11 on one side of the small screen holes 17. A plurality of large screen holes 19 with equal spacing are provided on the surface of the screen cylinder 11 on one side of the medium screen holes 18. A support frame 1 is provided on the outside of the distribution box 8, and a plurality of first guide strips 16 with equal spacing are provided on the inner wall of the screen cylinder 11. In this utility model, the PLC controller 2 is a Siemens S7-200, which is a mature existing technology. Therefore, its internal structure, working principle, and connection and control method with the electrical components in this application will not be described in detail. Urea, phosphate fertilizer, potash fertilizer, and other raw materials are crushed according to the formula to achieve a suitable particle size. The raw materials mixed according to the corresponding ratio have the effect of preventing caking and rapid dissolution. The mixed raw materials are then poured into the rotary drum granulator 3. The rotary drum granulator 3 is turned on, and the raw materials are continuously agitated under its rotation. At the same time, the water pump 5 is turned on, and the water pump 5 sprays the binder and some liquid raw materials in the storage tank 6 through the spray pipe. 4. The material is sprayed into the rotary drum granulator 3. With the continuous rotation of the rotary drum granulator 3 and the action of the binder, the material gradually agglomerates into granules. After the granules are formed, the compound fertilizer granules are conveyed to the screw conveyor 15 under the action of the second guide bar 26. The screw conveyor 15 is turned on and the granules are moved by the screw conveyor 15. During the movement of the granules, the heating box 14 is turned on and heat is provided to the screw conveyor 15 to dry the compound fertilizer granules. The dried granules are conveyed to the inside of the screen cylinder 11 through the connecting pipe 13 to complete the granulation production of compound fertilizer. The above design can quickly granulate and dry compound fertilizer. A rotary drum granulator 3 is installed at the top of the support frame 1, and a liquid storage tank 6 is installed at the top of the support frame 1 on one side of the rotary drum granulator 3. A water pump 5 is installed at the top of the liquid storage tank 6, and a spray pipe 4 is installed at the output end of the water pump 5, and the spray pipe 4 extends into the interior of the rotary drum granulator 3. A heating box 14 is provided at the top of the screening box 7. A screw conveyor 15 is provided inside the heating box 14. The feed inlet of the screw conveyor 15 corresponds to the discharge outlet of the rotary drum granulator 3. Multiple sets of second guide bars 26 with equal spacing are provided on the inner wall of the rotary drum granulator 3. The bottom end of the screw conveyor 15 is provided with a connecting pipe 13, which extends into the inside of the screen cylinder 11. The inside of the material distribution box 8 is provided with three sets of feeding frames 12 at equal intervals, and the three sets of feeding frames 12 correspond one-to-one with the small screen hole 17, the medium screen hole 18, and the large screen hole 19, respectively. The material distribution box 8 below the feeding frame 12 is equipped with a belt conveyor 9, and a collection box 10 is installed on the outer wall of the material distribution box 8. A PLC controller 2 is installed on the outer wall of the support frame 1, and the output terminal of the PLC controller 2 is electrically connected to the input terminal of the rotary drum granulator 3, water pump 5, belt conveyor 9, screw conveyor 15, heating box 14, and servo motor 20. The servo motor 20 is turned on, and the servo motor 20 drives the gear 22 to rotate through the drive shaft 21. Under the mutual meshing of the gear 22 and the gear ring 23, and the sliding cooperation of the limit wheel 25 and the limit ring 24, the gear 22 drives the screen cylinder 11 to rotate through the gear ring 23. Under the guiding action of the first guide bar 16, the compound fertilizer granules are moved by the first guide bar 16. The compound fertilizer passes through the small sieve hole 17, the medium sieve hole 18, and the large sieve hole 19 respectively. The aperture sizes of the three sets of sieve holes are as follows: small sieve hole 17... The sieve holes are between medium and large. Particles in the compound fertilizer with a diameter smaller than the corresponding sieve hole size fall onto the belt conveyor 9 through the feeding frame 12 and are then transported to the next production process by the belt conveyor 9. Meanwhile, larger clumps of fertilizer are transported from the sieve cylinder 11 to the collection box 10, where they are collected. This design allows for the classification and screening of compound fertilizer particles, improving the efficiency of compound fertilizer screening, eliminating the need for transfer and screening steps, and avoiding wasted time.

[0024] Work steps Working Principle: Urea, phosphate fertilizer, potash fertilizer, and other raw materials are pulverized according to the formula to achieve a suitable particle size. The resulting mixture, prepared in the correct proportions, has anti-caking and rapid-dissolving properties. The mixed raw materials are then poured into a rotary drum granulator 3. As the granulator rotates, the raw materials continuously agitate. A water pump 5 sprays the binder and some liquid raw materials from the storage tank 6 into the rotary drum granulator 3 through a spray pipe 4. With the continuous rotation of the granulator 3 and the action of the binder, the materials gradually agglomerate into granules. After granulation, the compound fertilizer granules are conveyed to a screw conveyor 15 by the second guide bar 26. The screw conveyor 15 moves the granules, and during this movement, a heating box 14 provides heat to the screw conveyor 15 to dry the compound fertilizer granules. The dried granules are conveyed to the inside of the screen cylinder 11 through the connecting pipe 13. The servo motor 20 drives the gear 22 to rotate through the drive shaft 21. The gear 22 drives the screen cylinder 11 to rotate through the gear ring 23. The first guide bar 16 drives the compound fertilizer granules to move. The compound fertilizer passes through the small screen hole 17, the medium screen hole 18 and the large screen hole 19 respectively. The size of the three sets of screen holes is small screen hole 17 < medium screen hole 18 < large screen hole 19. The granules of compound fertilizer with a diameter smaller than the corresponding screen hole size fall onto the belt conveyor 9 through the feeding frame 12 and are conveyed to the next production process by the belt conveyor 9. The larger granules of caking fertilizer are conveyed from the screen cylinder 11 to the collection box 10, where the collection box 10 collects the caking fertilizer. The above is the complete usage of the anti-caking fast-dissolving compound fertilizer granulation device.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A granulation device for anti-caking, fast-dissolving compound fertilizer, comprising a dispensing box and a screening box, characterized in that: A screening box is installed at the top of the material distribution box. A screen cylinder is movably installed inside the screening box. Multiple sets of equal-spaced limiting wheels are symmetrically and movably installed on the inner wall of the screening box. Limiting rings are installed on the outer walls at both ends of the screen cylinder, and the limiting rings are slidably connected to the limiting wheels. A servo motor is installed on the outer wall of the screening box, and a drive shaft is installed at the output end of the servo motor. A gear is installed on the surface of the drive shaft. A toothed ring is installed on the surface of the screen cylinder on one side of the gear, and the gear and the toothed ring mesh with each other. Multiple sets of equal-spaced small screen holes are installed on the surface of the screen cylinder on one side of the toothed ring.

2. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 1, characterized in that: The surface of the sieve cylinder on one side of the small sieve hole is provided with multiple sets of medium sieve holes at equal intervals, and the surface of the sieve cylinder on one side of the medium sieve hole is provided with multiple sets of large sieve holes at equal intervals.

3. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 1, characterized in that: The material distribution box is equipped with a support frame on its exterior, and the inner wall of the screen cylinder is provided with multiple sets of first guide strips at equal intervals.

4. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 3, characterized in that: A rotary drum granulator is installed at the top of the support frame, and a liquid storage tank is installed at the top of the support frame on one side of the rotary drum granulator.

5. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 4, characterized in that: A water pump is installed at the top of the storage tank, and a spray pipe is installed at the output end of the water pump, extending into the interior of the rotary drum granulator.

6. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 1, characterized in that: A heating box is installed at the top of the screening box. A screw conveyor is installed inside the heating box. The feed inlet of the screw conveyor corresponds to the discharge outlet of the rotary drum granulator. Multiple sets of second guide strips with equal spacing are installed on the inner wall of the rotary drum granulator.

7. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 6, characterized in that: The bottom end of the screw conveyor is provided with a connecting pipe, which extends into the interior of the screen cylinder.

8. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 1, characterized in that: The material distribution box is equipped with three sets of equally spaced feeding frames, and the three sets of feeding frames correspond one-to-one with the small sieve hole, the medium sieve hole, and the large sieve hole, respectively.

9. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 8, characterized in that: Each of the material distribution boxes below the feeding frame is equipped with a belt conveyor, and a collection box is installed on the outer wall of the material distribution box.

10. The anti-caking, fast-dissolving compound fertilizer granulation device according to claim 3, characterized in that: A PLC controller is installed on the outer wall of the support frame, and the output terminal of the PLC controller is electrically connected to the input terminal of the rotary drum granulator, water pump, belt conveyor, screw conveyor, heating box, and servo motor.

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