A fertilizer rotary drum granulator

Abstract

This utility model discloses a fertilizer rotary drum granulator, including a support base, a rotary drum granulation cylinder, a rotating shaft, a steam nozzle, a stirring rod, a brush, a drive system, a feeding system, a discharging system, a second motor, a steam system, and a base. The rotating steam nozzle sprays atomized steam into the fertilizer raw material inside the rotary drum granulation cylinder, filling the interior and creating a more uniform and complete wetting condition to fully wet the fertilizer raw material and facilitate granulation. The stirring rod and brush not only agitate and stir the fertilizer raw material to facilitate granulation but also clean the inner wall of the rotary drum granulation cylinder, preventing clumps from forming. This application solves the problem of clumps easily forming at the bottom of the granulation cylinder and on the stirring rod in rotary drum granulators, while also facilitating cleaning.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production technology, specifically a fertilizer rotary drum granulator. Background Technology

[0002] The existing process of producing fertilizer granules using a rotary drum granulator is as follows: a motor drives a rotary drum, which in turn causes the raw material to roll and rotate, thereby causing the raw material particles to generate extrusion pressure and agglomerate into spheres. Then, as needed, steam or water mist is introduced into the material layer. The water mist can increase the temperature of the raw material, which is conducive to the formation of granules. These granules become the cores, and the surrounding powder will adhere to these cores during rolling, gradually forming larger granules.

[0003] For example, Chinese patent CN220737436U, published on April 9, 2024, discloses a rotary drum granulation production equipment for producing compound fertilizers. The equipment includes a base, an anti-adhesion mechanism mounted on the top of the base, and a drive mechanism mounted on the anti-adhesion mechanism. The anti-adhesion mechanism includes a U-shaped frame fixed to the top of the base, a support shaft rotatably connected inside the U-shaped frame, and a rotary drum granulation cylinder fixedly mounted at one end of the support shaft. The bottom of the rotary drum granulation cylinder has an opening, on which a solenoid valve is installed. The interior of the rotary drum granulation cylinder has spray pipes. Through the cooperation of a water tank and a water pump and a water delivery pipe, water can enter the spray pipes and be sprayed out from various nozzles, facilitating the subsequent agglomeration of the material. The material is then dried by a heating rod, thus preventing the agglomerated material from re-agglomerating.

[0004] As can be seen from the above patents, the rotary drum granulation equipment uses water sprayed from various nozzles to facilitate the subsequent agglomeration of materials. However, during the agglomeration process, water easily accumulates at the bottom of the granulation cylinder and on the stirring rod, causing clumps to form and affecting the uniformity and efficiency of granulation size. Therefore, this invention provides a fertilizer rotary drum granulator to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a fertilizer rotary drum granulator.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fertilizer rotary drum granulator includes a support base.

[0008] A rotary drum granulator is used to roll, rotate, extrude, and agglomerate fertilizer raw materials into granules. The rotary drum granulator is rotatably mounted in the support base.

[0009] A rotating shaft, which is used for rotation and driving, is rotatably disposed at the axis of the rotary drum granulation cylinder and extends from the left end to the right end of the axis of the rotary drum granulation cylinder;

[0010] Several steam nozzles are used to spray steam to fully wet the fertilizer raw materials so that they can agglomerate and form particles. The steam nozzles are evenly distributed and fixed on the outer wall of the rotating shaft.

[0011] Several stirring rods are provided, which are used to stir and turn the fertilizer raw materials to refine larger particles into smaller particles. The stirring rods are evenly and equidistantly arranged on the outer wall of the rotating shaft.

[0012] Several brushes are provided, which are used to stir and agitate the fertilizer to facilitate granulation and to clean the inner wall of the rotary drum granulator. The brushes are fixedly connected to the radial outer end of the stirring rod and the bristles on the brushes are in contact with the inner wall of the rotary drum granulator.

[0013] Preferably, a drive system is provided in the middle of the rotary drum granulator. The drive system includes an external gear ring, which is fixedly sleeved on the outer arc surface of the rotary drum granulator. A first gear, a first motor, and a second gear are sequentially arranged below the external gear ring. The external gear ring meshes with the first gear, and the first gear meshes with the second gear. The output end of the first motor is fixedly connected to the second gear through a coupling.

[0014] Preferably, the rotating shaft is a hollow tube, with its left and right end faces being a solid circle and a hollow circle, respectively. The upper left end of the rotating shaft is connected to a feeding system, which includes a feed inlet and a feed hopper. The feed inlet is a hollow ring and is located on the radial outer circumference of the rotating shaft. The top of the feed hopper is fixedly connected to the support base, and the bottom of the feed hopper is close to the upper half of the feed inlet ring. A discharge system is provided at the lower right end face of the rotary drum granulator. The discharge system includes a discharge outlet, a discharge hopper, and a collection box. The discharge outlet is a hollow ring and is located on the inner side of the circumference of the right end face of the rotary drum granulator. The discharge hopper is fixedly connected to the support base, and the top of the discharge hopper is close to the bottom arc-shaped ring of the discharge outlet. A collection box is provided below the discharge hopper.

[0015] Preferably, a second motor is provided on the left side of the rotary drum granulation cylinder. The second motor is fixedly mounted on a support bracket, which is fixedly connected to a mounting bracket. The output end of the second motor is fixedly connected to the rotating shaft via a coupling.

[0016] Preferably, a steam system is provided on the right side of the rotary drum granulator, and the steam system is connected to the right end face of the rotating shaft through a pipe, which is fixed to the support base.

[0017] Preferably, the lower part of the support base is provided with a fixing frame.

[0018] Preferably, it also includes a base set on the ground, the upper surface of which is inclined and higher on the left and lower on the right. From left to right, from the second motor and the support to the steam system, all are installed on the inclined surface, and the inclination angle between the inclined surface and the ground is 5-10º.

[0019] The beneficial effects of this utility model are:

[0020] 1. By spraying atomized steam onto the fertilizer raw materials inside the rotary drum granulator through rotating steam nozzles, the inside of the rotary drum granulator can be filled to form a more uniform and complete wetting condition, which fully wets the fertilizer raw materials and facilitates agglomeration to form granules.

[0021] 2. The stirring rod and brush are installed so that the fertilizer raw materials can be stirred and turned to facilitate the formation of granules, while the inner wall of the rotary drum granulator can be brushed and cleaned to prevent the formation of clumps on the inner wall of the rotary drum granulator.

[0022] This application solves the problem of clumps easily forming at the bottom of the granulation cylinder and on the stirring rod in rotary drum granulators, while also facilitating cleaning. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] Figure 1 This is a front view structural diagram of the present utility model;

[0026] Figure 2 This is a partially enlarged structural schematic diagram of the present invention;

[0027] Figure 3 For the present utility model Figure 1 A schematic diagram of the structure at point A;

[0028] Figure 4 For the present utility model Figure 1 A schematic diagram of the structure at point B;

[0029] Figure 5 For the present utility model Figure 1 A schematic diagram of the structure at point C;

[0030] As shown in the figure:

[0031] 1. Support base; 101. Fixing frame; 2. Rotary drum granulation cylinder; 3. Rotating shaft; 4. Steam nozzle; 5. Stirring rod; 6. Brush; 7. Drive system; 71. External gear ring; 72. First gear; 73. First motor; 74. Second gear; 8. Feeding system; 81. Feed inlet; 82. Feed hopper; 9. Discharge system; 91. Discharge outlet; 92. Discharge hopper; 93. Collection box; 10. Second motor; 11. Steam system; 12. Base. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0033] 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 claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0035] It should be noted that similar labels and letters are likely to represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Reference Figure 1-5 The present invention discloses a fertilizer rotary drum granulator, comprising a support base 1, a rotary drum granulation cylinder 2, a rotating shaft 3, a steam nozzle 4, a stirring rod 5, a brush 6, a drive system 7, a feeding system 8, a discharging system 9, a second motor 10, a steam system 11, and a base 12. A rotary drum granulator 2, used to roll, rotate, compress, and agglomerate fertilizer raw materials into granules, is rotatably mounted in a support base 1; a rotating shaft 3, used for rotation and driving, is rotatably mounted on the axis of the rotary drum granulator 2 and extends from the left end to the right end of the axis; several steam nozzles 4, used to spray steam to fully wet the fertilizer raw materials to facilitate agglomeration and granulation, are evenly distributed and fixedly mounted on the outer wall of the rotating shaft 3; several stirring rods 5, used to stir and agitate the fertilizer raw materials, are evenly distributed and fixedly mounted on the outer wall of the rotating shaft 3; several brushes 6, used to stir and agitate the fertilizer to facilitate granulation and to clean the inner wall of the rotary drum granulator 2, are fixedly connected to the radial outer end of the stirring rods 5, and the bristles on the brushes 6 are in contact with the inner wall of the rotary drum granulator 2.

[0039] In an optional embodiment, a drive system 7 for driving the rotary drum granulator 2 to rotate is located in the middle of the rotary drum granulator 2. It includes an external gear ring 71 and a first gear 72, a first motor 73, and a second gear 74 arranged sequentially below it. The external gear ring 71 is fixedly sleeved on the outer arc surface of the rotary drum granulator 2. The external gear ring 71 meshes with the first gear 72, and the first gear 72 meshes with the second gear 74. The output end of the first motor 73 is fixedly connected to the second gear 74 through a coupling. The output end of the first motor 73 drives the second gear 74 to rotate, and then drives the first gear 72 and the external gear ring 71 to rotate sequentially through meshing, and finally drives the rotary drum granulator 2 to rotate.

[0040] In an optional embodiment, the hollow tubular rotating shaft 3 facilitates the transport of steam. The left and right end faces of the rotating shaft 3 are solid and hollow circles, respectively. The hollow circle structure facilitates the input of steam from the right end face of the rotating shaft 3, while the solid circle structure facilitates the transport of steam up to the left end face of the rotating shaft 3. The feeding system 8, located at the upper left end of the rotating shaft 3, includes a feed inlet 81 and a feed hopper 82. The feed inlet 81, located on the radial outer circumference of the rotating shaft 3, is a hollow ring shape, allowing for feeding while the rotating shaft 3 rotates. The top of the feed hopper 82 is fixedly connected to the support base 1, and the bottom of the feed hopper 82 is close to the upper half of the feed inlet 81. Fertilizer raw materials can enter the rotary drum granulator 2 from the feed hopper 82 through the feed inlet 81 without affecting the rotation of the rotating shaft 3. The discharge system 9, located at the lower right end face of the rotary drum granulator 2, includes... The system includes a discharge port 91, a discharge hopper 92, and a collection box 93. The discharge port 91, located on the inner side of the right end face of the rotary drum granulator 2, is a hollow ring shape, so that material can still be discharged when the rotary drum granulator 2 is rotating. The top of the discharge hopper 92, which is fixedly connected to the support base 1, is close to the bottom arc-shaped ring of the discharge port 91. The collection box 93 is located below the discharge hopper 92. Thus, without affecting the rotation of the rotary drum granulator 2, the granulated fertilizer particles can be collected from the bottom arc-shaped ring of the discharge port 91 through the discharge hopper 92 into the collection box 93.

[0041] In an optional embodiment, the second motor 10, located on the left side of the rotary drum granulator 2, is fixedly mounted on a support bracket and then fixedly connected to the mounting bracket to achieve fixation and support of the second motor 10; the output end of the second motor 10 is fixedly connected to the rotating shaft 3 through a coupling, and the output end of the second motor 10 drives the rotating shaft 3 to rotate, which in turn drives the steam nozzle 4, the stirring rod 5 and the brush 6 to rotate, thereby realizing the functions of spraying steam, stirring and turning the fertilizer raw materials, and cleaning the inner wall of the rotary drum granulator.

[0042] In an optional embodiment, a steam system 11 located on the right side of the rotary drum granulator 2 is connected to the right end face of the rotating shaft 3 via a pipe fixed to the support base 1. The steam system 11 provides steam that sequentially passes through the pipe and the hollow circle on the right end face of the rotating shaft 3 into the rotating shaft 3, and is sprayed into the rotary drum granulator 2 by the steam nozzle 4, providing more uniform and complete wetting of the fertilizer raw material granules. Compared to water spraying, where water, due to gravity, only reaches the bottom of the inner wall of the rotary drum granulator 2 and easily clumps together, affecting the granulation effect, the steam sprayed by the steam nozzle 4 is a mist-like steam that can fill all areas inside the rotary drum granulator 2, creating more uniform and complete wetting conditions, resulting in more uniform and complete granulation of the fertilizer granules and achieving a better granulation effect.

[0043] In an optional embodiment, a fixing frame 101 is provided at the lower part of the support base 1 to fix and support the support base 1.

[0044] In an optional embodiment, the upper surface of the base 12 set on the ground is inclined and higher on the left and lower on the right. The rotary drum granulator of this application (from left to right, from the second motor 10, the support base 1 to the steam system 11) is installed on the inclined surface with an inclination angle of 5-10º, so that the fertilizer raw material particles can be granulated in the rotary drum granulator 2 and then enter the collection box 93 to form a continuous operation and improve granulation efficiency.

[0045] The working principle and usage process of this utility model are as follows:

[0046] Fertilizer raw materials enter the rotary drum granulator 2 through the feed inlet 81 via the feed hopper 82 of the feeding system 8. The output end of the first motor 73 of the drive system 7 drives the second gear 74 to rotate, which in turn drives the first gear 72 and the external gear ring 71 to rotate in sequence, and finally drives the rotary drum granulator 2 to rotate. At the same time, the output end of the second motor 10 drives the rotating shaft 3 to rotate, which in turn drives the steam nozzle 4, the stirring rod 5 and the brush 6 to rotate, thereby spraying steam, stirring and turning the fertilizer raw materials, and cleaning the inner wall of the rotary drum granulator. The steam system 11 can provide steam to enter the rotating shaft 3 through the pipe and the hollow circle on the right end face of the rotating shaft 3 in sequence, and spray it into the rotary drum granulator 2 through the steam nozzle 4 to wet the fertilizer raw material particles more evenly and completely. The granulated fertilizer particles can be collected in the collection box 93 through the discharge hopper 92 via the arc-shaped ring at the bottom of the discharge port 91.

[0047] Of course, the embodiments described in this specific implementation are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A fertilizer rotary drum granulator, comprising a support base (1), Rotary drum granulator (2), the rotary drum granulator (2) is used to roll, rotate, squeeze and agglomerate fertilizer raw materials to form granules, the rotary drum granulator (2) is rotatably set in the support base (1); A rotating shaft (3) is used for rotation and driving. The rotating shaft (3) is rotatably disposed on the axis of the rotary drum granulator (2) and extends from the left end to the right end of the axis of the rotary drum granulator (2). Its features are: A number of steam nozzles (4) are used to spray steam to fully wet the fertilizer raw materials so that they can agglomerate and form particles. The steam nozzles (4) are evenly distributed and fixed on the outer wall of the rotating shaft (3). Several stirring rods (5) are used to stir and turn the fertilizer raw materials to refine larger particles into smaller particles. The stirring rods (5) are evenly arranged at equal intervals on the outer wall of the rotating shaft (3). Several brushes (6) are provided for stirring and agitating the fertilizer to facilitate the formation of granules and for cleaning the inner wall of the rotary drum granulator (2). The brushes (6) are fixedly connected to the radial outer end of the stirring rod (5) and the bristles on the brushes (6) are in contact with the inner wall of the rotary drum granulator (2).

2. The fertilizer rotary drum granulator according to claim 1, characterized in that: A drive system (7) is provided in the middle of the rotary drum granulator (2). The drive system (7) includes an external gear ring (71). The external gear ring (71) is fixedly sleeved on the outer arc surface of the rotary drum granulator (2). A first gear (72), a first motor (73), and a second gear (74) are arranged in sequence below the external gear ring (71). The external gear ring (71) meshes with the first gear (72), and the first gear (72) meshes with the second gear (74). The output end of the first motor (73) is fixedly connected to the second gear (74) through a coupling.

3. The fertilizer rotary drum granulator according to claim 1, characterized in that: The rotating shaft (3) is a hollow tube. The left and right end faces of the rotating shaft (3) are solid circles and hollow circles, respectively. The upper left end of the rotating shaft (3) is connected to the feeding system (8). The feeding system (8) includes a feed inlet (81) and a feed hopper (82). The feed inlet (81) is a hollow ring and is located on the radial outer circumference of the rotating shaft (3). The top of the feed hopper (82) is fixedly connected to the support base (1), and the bottom of the feed hopper (82) is close to the upper half of the feed inlet (81). The lower right end face of the rotary drum granulator (2) is provided with a discharge system (9). The discharge system (9) includes a discharge port (91), a discharge hopper (92) and a collection box (93). The discharge port (91) is a hollow ring and is located on the inner side of the circumference of the right end face of the rotary drum granulator (2). The discharge hopper (92) is fixedly connected to the support base (1) and the top of the discharge hopper (92) is close to the bottom arc ring of the discharge port (91). The collection box (93) is provided below the discharge hopper (92).

4. A fertilizer rotary drum granulator according to claim 1, characterized in that: A second motor (10) is provided on the left side of the rotary drum granulation cylinder (2). The second motor (10) is fixedly installed on the support bracket, which is fixedly connected to the mounting bracket. The output end of the second motor (10) is fixedly connected to the rotating shaft (3) through a coupling.

5. A fertilizer rotary drum granulator according to claim 4, characterized in that: A steam system (11) is provided on the right side of the rotary drum granulator (2). The steam system (11) is connected to the right end face of the rotating shaft (3) through a pipe, and the pipe is fixed on the support base (1).

6. A fertilizer rotary drum granulator according to claim 1, characterized in that: A fixing frame (101) is provided at the lower part of the support base (1).

7. A fertilizer rotary drum granulator according to claim 5, characterized in that: It also includes a base (12) set on the ground. The upper surface of the base (12) is an inclined surface with the left side higher than the right side. From left to right, from the second motor (10), the support base (1) to the steam system (11), all are installed on the inclined surface. The inclination angle between the inclined surface and the ground is 5-10º.

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