Stirring device for producing sustained and controlled release fertilizer

Abstract

The utility model provides a stirring device for producing a slow / controlled-release fertilizer. The technical problem that an existing stirring device cannot fully stir fertilizer particles is solved. According to the technical scheme, the stirring device for producing the sustained and controlled release fertilizer comprises a base, a stirring tank horizontally arranged on the base, a hollow spiral blade arranged in the stirring tank and a motor for driving the hollow spiral blade to rotate, a feeding port is formed in the left end of the stirring tank, and a discharging port is formed in the bottom of the right end of the stirring tank and is matched with a valve; the hollow spiral blade is provided with a plurality of material turning plates; the width direction of the material turning plate is parallel to the axial direction of the hollow spiral blade; and the length direction of the material turning plate corresponds to the radial direction of the hollow spiral blade. According to the utility model, fertilizer particles can be stirred and turned over more sufficiently and efficiently, so that the fertilizer particles are ensured to be in full contact with a solvent dissolved with a coating material.

Description

Technical Field

[0001] The utility model relates to the technical field of slow and controlled release fertilizer production and processing, and specifically relates to a stirring device for producing slow and controlled release fertilizers. Background Art

[0002] One of the common production and processing methods of slow and controlled release fertilizers is to coat a semi-permeable or poorly soluble coating on the surface of water-soluble fertilizer particles, so that the coated water-soluble fertilizer particles have the characteristic of slowly releasing nutrients.

[0003] In order to evenly coat the coating material on the surface of fertilizer particles, the coating material is usually dissolved in a solvent; then, while stirring the fertilizer particles, the solvent dissolved with the coating material is sprayed. While stirring, the fertilizer particles are heated to dry the solvent, so that the coating material can remain on the surface of the fertilizer particles.

[0004] In the prior art, when mass-producing slow and controlled release fertilizers, fertilizer particles are generally put into a horizontally placed stirring tank, and the stirring of the fertilizer particles is realized by driving the stirring tank to rotate itself. Using this stirring method, especially when the input amount of fertilizer particles is large, there is a defect of insufficient stirring: the fertilizer particles initially located at the bottom layer are often difficult to be turned to the surface layer, difficult to fully contact with the solvent, and prone to the problem of insufficient coating. Summary of the Invention

[0005] The purpose of the utility model is to provide a stirring device for producing slow and controlled release fertilizers, which can stir and turn the fertilizer particles more fully and efficiently to ensure that the fertilizer particles are fully contacted with the solvent dissolved with the coating material, so that the fertilizer particles are fully and evenly coated with the coating material.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A stirring device for producing slow and controlled release fertilizers includes: a base, a stirring tank lying horizontally on the base, a hollow spiral blade arranged in the stirring tank, and a motor for driving the hollow spiral blade to rotate; wherein, the stirring tank is provided with a feeding port at the left end; the stirring tank is provided with a discharging port at the bottom of the right end and is adapted with a valve; the hollow spiral blade is provided with a plurality of turning plates along the extending direction; the width direction of the turning plate is parallel to the axial direction of the hollow spiral blade to form an inner edge and an outer edge parallel to the axis of the hollow spiral blade; the length direction of the turning plate corresponds to the radial direction of the hollow spiral blade to form a radial edge extending along the radial direction of the hollow spiral blade.

[0008] Optionally, the inner end of the radial edge of the turning plate extends to the inner circle of the hollow spiral blade; the outer end of the radial edge of the turning plate extends to the outer circle of the hollow spiral blade.

[0009] Optionally, the stirring tank and the hollow spiral blade extend in the left-right direction; the stirring tank includes: a cylindrical main body section, and a feeding section connected to the left end of the main body section; the diameter of the feeding section gradually increases from left to right, and the feeding port is arranged at the left end of the feeding section; the right end of the main body section is open and is adapted to be covered; an outer ring portion surrounding the outer periphery is provided at the right end of the main body section, and the outer ring portion and the cover are connected by bolts.

[0010] Optionally, the diameter of the right end of the feeding section is smaller than the diameter of the main body section, and an inner ring portion surrounding the inner periphery is provided at the left end of the main body section to form a connection with the feeding section; a first ring portion is provided at the left end of the hollow spiral blade, and the first ring portion is rotationally connected to the inner ring portion through a first slewing bearing.

[0011] Optionally, a second ring portion is provided at the right end of the hollow spiral blade, and the second ring portion is rotationally connected to the cover through a second slewing bearing.

[0012] Optionally, the second ring portion is installed on the inner ring of the second slewing bearing; internal teeth are provided on the inner ring of the second slewing bearing and are in transmission connection with a gear; the motor drives the gear to rotate, thereby driving the hollow spiral blade to rotate.

[0013] Optionally, the motor is installed on the right side wall of the cover, and the cover is provided with a shaft hole for the shaft of the motor to pass through.

[0014] Optionally, the turning plate includes: a first turning plate installed on the right side surface of the hollow spiral blade; the first turning plate is provided with a first connecting portion attached to the hollow spiral blade at the left end, and the first connecting portion and the hollow spiral blade are connected by bolts.

[0015] Optionally, the turning plate further includes: a second turning plate installed on the left side surface of the hollow spiral blade; the second turning plate is provided with a second connecting portion attached to the hollow spiral blade at the right end, and the second connecting portion and the hollow spiral blade are connected by bolts.

[0016] The working principle of the present utility model is as follows: This stirring device is usually used in conjunction with a spraying device. The spray pipe of the spraying device extends into the stirring tank, and the spray head installed on the spray pipe sprays the solvent dissolved with the coating material into the stirring tank. By driving the hollow spiral blade to rotate forward, the hollow spiral blade can push the fertilizer particles in the stirring tank from the feeding port towards the discharging port; meanwhile, the turning plate will rotate synchronously with the hollow spiral blade, turning the fertilizer particles at the bottom layer from the front to the surface layer. By driving the hollow spiral blade to rotate reversely, the hollow spiral blade can push the fertilizer particles in the stirring tank from the discharging port towards the feeding port; meanwhile, the turning plate will rotate synchronously with the hollow spiral blade, turning the fertilizer particles at the bottom layer from the back to the surface layer. In this way, by driving the hollow spiral blade to rotate forward and reverse alternately, the fertilizer particles can be continuously stirred and turned. When the fertilizer particles are completely coated, by driving the hollow spiral blade to rotate forward continuously and opening the valve, the fertilizer particles can be discharged from the discharging port.

[0017] It can be seen from this that the beneficial effects of the present utility model are as follows: It can stir and turn the fertilizer particles more fully and efficiently to ensure that the fertilizer particles are in full contact with the solvent dissolved with the coating material, so that the fertilizer particles are fully and evenly coated with the coating material. In addition, by using the turning plate installed on the hollow spiral blade to stir the fertilizer particles, after the coating is completed, the fertilizer particles in the stirring tank can be conveniently and quickly pushed to the discharging port by the hollow spiral blade for discharging. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the present utility model;

[0020] Figure 2 It is an assembly schematic diagram of the stirring tank and the hollow spiral blade;

[0021] Figure 3 It is an assembly schematic diagram of the hollow spiral blade, the first slewing bearing and the second slewing bearing;

[0022] Figure 4 It is an assembly schematic diagram of the hollow spiral blade and the turning plate.

[0023] Reference numerals: 1, base; 2, mixing tank; 3, hollow spiral blade; 4, motor; 5, feeding port; 6, discharging port; 7, valve; 8, inner edge; 9, outer edge; 10, radial edge; 11, main body section; 12, feeding section; 13, cover; 14, outer ring part; 15, inner ring part; 16, first ring part; 17, first slewing bearing; 18, second ring part; 19, second slewing bearing; 20, gear; 21, first turning plate; 22, first connecting part; 23, second turning plate; 24, second connecting part. Detailed implementation manners

[0024] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0027] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] The following disclosure provides many different implementation manners or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0029] The following is combined with the attached Figure 1~Appendix Figure 4 A detailed description of the embodiments of the present utility model will be given.

[0030] The embodiments of the present utility model provide a stirring device for producing sustained-release and controlled-release fertilizers. The stirring device includes: a base 1, a stirring tank 2 lying horizontally on the base 1, a hollow spiral blade 3 disposed in the stirring tank 2, and a motor 4 for driving the hollow spiral blade 3 to rotate. Among them, the stirring tank 2 is provided with a feeding port 5 at the left end; the stirring tank 2 is provided with a discharging port 6 at the bottom of the right end and is fitted with a valve 7. The hollow spiral blade 3 is provided with a plurality of turning plates along the extending direction. The width direction of the turning plate is parallel to the axial direction of the hollow spiral blade 3 to form an inner edge 8 and an outer edge 9 parallel to the axis of the hollow spiral blade 3. It should be understood that the inner edge 8 of the turning plate refers to the edge close to the axis of the hollow spiral blade 3, and the outer edge 9 of the turning plate refers to the edge far from the axis of the hollow spiral blade 3. The length direction of the turning plate corresponds to the radial direction of the hollow spiral blade 3 to form a radial edge 10 extending along the radial direction of the hollow spiral blade 3. It should be understood that by providing the turning plate with the foregoing structure on the hollow spiral blade 3, when the hollow spiral blade 3 rotates, the turning plate can turn the fertilizer particles located at the bottom layer to the surface layer; at the same time, on the other hand, after film coating is completed, the fertilizer particles in the stirring tank 2 can be conveniently and quickly pushed to the discharging port 6 for discharging through the hollow spiral blade 3. In addition, the distance between the outer edge 9 of the turning plate and the inner wall of the stirring tank 2 is smaller than the diameter of the fertilizer particles; generally, the distance between the outer edge 9 of the turning plate and the inner wall of the stirring tank 2 is set to be less than or equal to 3 mm.

[0031] The specific embodiments of the present utility model are described below: This stirring device is usually used in cooperation with a spraying device. The spray pipe of the spraying device extends into the stirring tank 2, and the nozzle installed on the spray pipe sprays the solvent dissolved with the coating material into the stirring tank 2. By making the motor 4 drive the hollow spiral blade 3 to rotate forward, the hollow spiral blade 3 can push the fertilizer particles in the stirring tank 2 from the feeding port 5 towards the discharging port 6; at the same time, the turning plate will rotate synchronously with the hollow spiral blade 3, turning the fertilizer particles at the bottom layer to the surface layer from the front. By making the motor 4 drive the hollow spiral blade 3 to rotate reversely, the hollow spiral blade 3 can push the fertilizer particles in the stirring tank 2 from the discharging port 6 towards the feeding port 5; at the same time, the turning plate will rotate synchronously with the hollow spiral blade 3, turning the fertilizer particles at the bottom layer to the surface layer from the rear. In this way, by making the motor 4 drive the hollow spiral blade 3 to rotate forward and reverse alternately, the fertilizer particles can be continuously stirred and turned. When the fertilizer particles are coated, make the motor 4 drive the hollow spiral blade 3 to rotate forward continuously and open the valve 7, then the fertilizer particles can be discharged from the discharging port 6. The present utility model can stir and turn the fertilizer particles more fully and efficiently to ensure that the fertilizer particles are in full contact with the solvent dissolved with the coating material, so that the fertilizer particles are fully and evenly coated with the coating material. In addition, by using the turning plate installed on the hollow spiral blade 3 to stir the fertilizer particles, after the coating is completed, the fertilizer particles in the stirring tank 2 can be conveniently and quickly pushed to the discharging port 6 for discharging through the hollow spiral blade 3.

[0032] Further, the inner end of the radial edge 10 of the turning plate extends to the inner ring of the hollow spiral blade 3; the outer end of the radial edge 10 of the turning plate extends to the outer ring of the hollow spiral blade 3.

[0033] Further, the stirring tank 2 and the hollow spiral blade 3 extend in the left-right direction; the stirring tank 2 includes: a cylindrical main body section 11 and a feeding section 12 connected to the left end of the main body section 11; the diameter of the feeding section 12 gradually increases from left to right, and the feeding port 5 is provided at the left end of the feeding section 12; the right end of the main body section 11 is open and is fitted with a cover 13; an outer ring portion 14 is provided around the outer periphery at the right end of the main body section 11, and the outer ring portion 14 and the cover 13 are connected by bolts. It should be understood that the disassembly and assembly operation of the hollow spiral blade 3 can be carried out from the right end of the stirring tank 2.

[0034] Further, the diameter of the right end of the feeding section 12 is smaller than the diameter of the main body section 11, and an inner ring portion 15 is provided around the inner periphery at the left end of the main body section 11 to form a connection with the feeding section 12; a first ring portion 16 is provided at the left end of the hollow spiral blade 3, and the first ring portion 16 is rotationally connected to the inner ring portion 15 through a first slewing bearing 17. It should be understood that the main body section 11, the inner ring portion 15, and the feeding section 12 of the stirring tank 2 can be connected by welding or integrally formed by casting.

[0035] Further, a second ring portion 18 is provided at the right end of the hollow spiral blade 3, and the second ring portion 18 is rotatably connected to the cover 13 through a second slewing bearing 19. It should be understood that the hollow spiral blade 3 is relatively large in size; a first ring portion 16 is provided at the left end of the hollow spiral blade 3 and is rotatably connected to the inner ring portion 15 of the mixing tank 2 through a first slewing bearing 17; a second ring portion 18 is provided at the right end of the hollow spiral blade 3 and is rotatably connected to the cover 13 through a second slewing bearing 19; in this way, the hollow spiral blade 3 can be made more stable.

[0036] Further, the second ring portion 18 is installed on the inner ring of the second slewing bearing 19; the inner ring of the second slewing bearing 19 is provided with internal teeth and is in transmission connection with the gear 20; the motor 4 drives the gear 20 to rotate, thereby driving the hollow spiral blade 3 to rotate. It should be understood that this is beneficial to reducing the load of the motor 4.

[0037] Further, the motor 4 is installed on the right side wall of the cover 13, and the cover 13 is provided with a shaft hole for the shaft of the motor 4 to pass through.

[0038] Further, the turning plate includes: a first turning plate 21 installed on the right side surface of the hollow spiral blade 3; the first turning plate 21 is provided with a first connecting portion 22 attached to the hollow spiral blade 3 at the left end, and the first connecting portion 22 is connected to the hollow spiral blade 3 by bolts. It should be understood that the first connecting portion 22 and the hollow spiral blade 3 are correspondingly provided with mounting holes for the bolts to pass through.

[0039] Further, the turning plate further includes: a second turning plate 23 installed on the left side surface of the hollow spiral blade 3; the second turning plate 23 is provided with a second connecting portion 24 attached to the hollow spiral blade 3 at the right end, and the second connecting portion 24 is connected to the hollow spiral blade 3 by bolts. It should be understood that the second connecting portion 24 and the hollow spiral blade 3 are correspondingly provided with mounting holes for the bolts to pass through. In addition, the first turning plate 21 and the second turning plate 23 can be made to correspond left and right; and the length of the outer edge 9 of the turning plate is made less than 0.5 times the pitch of the hollow spiral blade 3 and greater than 0.25 times the pitch of the hollow spiral blade 3; the length of the inner edge 8 of the turning plate is made less than 0.5 times the pitch of the hollow spiral blade 3 and greater than 0.25 times the pitch of the hollow spiral blade 3; in this way, while ensuring that the turning plate fully turns the fertilizer particles, the lengths of the outer edge 9 and the inner edge 8 of the turning plate can be shortened, which is beneficial to improving the strength of the turning plate.

[0040] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that without departing from the principles and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. Stirring device for producing sustained-release fertilizer, characterized in that, Comprising: A base (1); and A mixing tank (2) lying horizontally on the base (1); and A hollow spiral blade (3) disposed inside the mixing tank (2); and A motor (4) for driving the hollow spiral blade (3) to rotate; Wherein, The mixing tank (2) is provided with a feeding port (5) at its left end; The mixing tank (2) is provided with a discharging port (6) at the bottom of its right end, and is adapted with a valve (7); The hollow spiral blade (3) is provided with a plurality of turning plates along its extending direction; The width direction of the turning plate is parallel to the axial direction of the hollow spiral blade (3), so as to form an inner edge (8) and an outer edge (9) parallel to the axis of the hollow spiral blade (3); The length direction of the turning plate corresponds to the radial direction of the hollow spiral blade (3), so as to form a radial edge (10) extending along the radial direction of the hollow spiral blade (3).

2. The stirring device for producing sustained-release and controlled-release fertilizers according to claim 1, wherein: The inner end of the radial edge (10) of the turning plate extends to the inner circle of the hollow spiral blade (3); The outer end of the radial edge (10) of the turning plate extends to the outer circle of the hollow spiral blade (3).

3. The stirring device for producing sustained-release and controlled-release fertilizers according to claim 1, wherein: The mixing tank (2) and the hollow spiral blade (3) extend in the left-right direction; The mixing tank (2) includes: a cylindrical main body section (11), and a feeding section (12) connected to the left end of the main body section (11); The diameter of the feeding section (12) gradually increases from left to right, and the feeding port (5) is provided at the left end of the feeding section (12); The right end of the main body section (11) is open and is adapted with a cover (13); The right end of the main body section (11) is provided with an outer ring portion (14) surrounding the outer periphery, and the outer ring portion (14) and the cover (13) are connected by bolts.

4. The stirring device for producing sustained-release and controlled-release fertilizers according to claim 3, wherein: The diameter of the right end of the feeding section (12) is smaller than the diameter of the main body section (11); the left end of the main body section (11) is provided with an inner ring portion (15) surrounding the inner periphery to form a connection with the feeding section (12); The left end of the hollow spiral blade (3) is provided with a first ring portion (16), and the first ring portion (16) is rotationally connected to the inner ring portion (15) through a first slewing bearing (17).

5. The stirring device for producing sustained-release and controlled-release fertilizers according to claim 4, wherein: The right end of the hollow spiral blade (3) is provided with a second ring portion (18), and the second ring portion (18) is rotationally connected to the cover (13) through a second slewing bearing (19).

6. The stirring device for producing sustained-release and controlled-release fertilizers according to claim 5, wherein: The second ring portion (18) is installed in the inner ring of the second slewing bearing (19); The inner ring of the second slewing bearing (19) is provided with internal teeth and is in transmission connection with a gear (20); The motor (4) drives the gear (20) to rotate, thereby driving the hollow spiral blade (3) to rotate.

7. The stirring device for producing sustained-release and controlled-release fertilizers according to claim 6, wherein: The motor (4) is installed on the right side wall of the cover (13), and the cover (13) is provided with a shaft hole for the rotating shaft of the motor (4) to pass through.

8. The stirring device for producing slow and controlled release fertilizers according to any one of claims 1 to 7, characterized in that: The turning plate includes: A first turning plate (21) installed on the right side surface of the hollow spiral blade (3); The first turning plate (21) is provided with a first connecting portion (22) attached to the hollow spiral blade (3) at the left end, and the first connecting portion (22) is connected to the hollow spiral blade (3) by bolts.

9. The stirring device for producing slow and controlled release fertilizers according to claim 8, characterized in that: The turning plate further includes: a second turning plate (23) installed on the left side surface of the hollow spiral blade (3); The second turning plate (23) is provided with a second connecting portion (24) attached to the hollow spiral blade (3) at the right end, and the second connecting portion (24) is connected to the hollow spiral blade (3) by bolts.

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