Granulation device for compound fertilizer production

Abstract

The utility model provides a granulation device for compound fertilizer production, and solves the problems that a return material is formed in the granulation process of a rotary drum granulator, the subsequent processing is influenced due to the fact that an unformed material in the return material is mixed with granules, an additional treatment or screening step is needed to separate the return material, the production cost is increased, and the production time is shortened. According to the utility model, the sleeve is arranged at the left end of the rotary drum, and the annular filter screen is arranged on the sleeve, so that unformed materials can be screened out through the annular filter screen while the sleeve rotates along with the rotary drum, and the situation that the unformed materials in returned materials are mixed with granules to influence subsequent processing is avoided; the subsequent processing can be influenced when the material is mixed with the granules, and the returned material does not need to be separated by subsequent additional treatment or screening, so that the production cost is reduced, and the production time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of compound fertilizer production, in particular to a granulating device for compound fertilizer production. Background Technique

[0002] The development of planting in agricultural production is inseparable from fertilizers. Fertilizers refer to substances that can supply the nutrients required for crop growth and development, improve the soil properties, and increase the crop yield and quality. They are an important production material in agricultural production. At present, during the preparation of fertilizers, a granulator is needed to extrude and granulate the fertilizers for better transportation and use.

[0003] The granulating devices for compound fertilizer production usually include a rotary drum granulator, a disk granulator, and an extrusion granulator. Among them, the rotary drum granulator, also known as the rotary drum steam granulator, is a forming machine that can manufacture materials into specific shapes. The rotary drum granulator is one of the key equipment in the compound fertilizer industry and is suitable for large-scale production of cold and hot granulation as well as high, medium, and low-concentration compound fertilizers. The main working method is agglomeration wet granulation. Through a certain amount of water or steam, the basic fertilizer is fully chemically reacted after being humidified in the cylinder body. Under certain liquid-phase conditions, with the rotation of the cylinder body, the material particles generate extrusion force to agglomerate into balls.

[0004] During the granulation process of the rotary drum granulator, return materials will be formed, that is, part of the unformed materials are discharged together with the materials. The unformed materials are in the form of powders or fine particles, and mixing with the granular materials will affect the subsequent processing, and additional treatment or screening steps are required to separate the return materials, increasing the production cost and time. Summary of the Utility Model

[0005] In order to solve the problem that during the granulation process of the rotary drum granulator in the background technique, return materials will be formed, the unformed materials in the return materials are mixed with the granular materials and will affect the subsequent processing, and additional treatment or screening steps are required to separate the return materials, increasing the production cost and time, the utility model provides a granulating device for compound fertilizer production.

[0006] The technical solution of the utility model is: a granulating device for compound fertilizer production, including a chassis and a rotary drum. Four shaft seats arranged in a rectangle are fixedly provided at the top of the chassis, and idler rollers are rotatably provided on the shaft seats; the rotary drum is a cylindrical structure extending in the left-right direction and having a left opening structure. A feed port is opened at the right end of the rotary drum, and two support rings arranged at intervals left and right are fixedly sleeved on the outer wall of the rotary drum. The support rings are provided to roll on the idler rollers in the same front-rear direction; a driving mechanism is provided on the chassis, and the driving mechanism is used to drive the rotary drum to rotate;

[0007] A sleeve that is transparent from left to right is connected to the left-end flange of the drum. The inner diameter of the drum is the same as that of the sleeve, and the left end of the drum communicates with the right end of the sleeve. A plurality of filter holes are provided in the sleeve at intervals along its circumferential direction. The plurality of filter holes provided at intervals along its circumferential direction together form an annular filter screen, and the annular filter screen is used to screen out the unformed materials.

[0008] Preferably, an aggregate cylinder is sleeved on the sleeve, and there is a gap between the outer wall of the sleeve and the inner wall of the aggregate cylinder. The annular filter screen is located inside the aggregate cylinder;

[0009] The right end of the aggregate cylinder is hermetically arranged with the outer wall of the sleeve, and an annular cavity with a left-opening structure is formed between the outer wall of the sleeve and the inner wall of the aggregate cylinder.

[0010] Preferably, the left end of the sleeve is located to the left of the aggregate cylinder.

[0011] Preferably, the driving mechanism includes a driving motor fixedly arranged on the chassis. A spur gear is fixedly arranged on the output shaft of the driving motor. A gear ring is fixedly sleeved in the middle of the outer wall of the drum, and the spur gear meshes with the gear ring.

[0012] Preferably, a plurality of baffle mechanisms are arranged at intervals from left to right inside the drum. The baffle mechanisms are used to control the flow and mixing of materials in the drum. The baffle mechanisms include a plurality of first arc-shaped baffles fixedly arranged on the inner wall of the drum. The first arc-shaped baffles extend along the circumferential direction of the drum, and the plurality of first arc-shaped baffles are arranged at intervals along the circumferential direction of the drum.

[0013] Preferably, a second arc-shaped baffle is slidably arranged on the left side of the first arc-shaped baffle. The second arc-shaped baffle has the same structure as the first arc-shaped baffle. A chute is provided on the second arc-shaped baffle along its extending direction. A stud extending leftward is fixedly arranged on the left side of the first arc-shaped baffle. The stud slidably penetrates through the chute, and a nut is fixedly arranged at the left end of the chute after passing through the chute. The stud is used to clamp and fix the second arc-shaped baffle on the first arc-shaped baffle through the nut.

[0014] Preferably, both the first arc-shaped baffle and the second arc-shaped baffle are three in number, and a tripod is fixedly arranged on the left side of the three second arc-shaped baffles together.

[0015] Advantages of the present utility model: By arranging a sleeve at the left end of the drum and providing an annular filter screen on the sleeve, when the sleeve rotates together with the drum, the unformed materials can be screened out through the annular filter screen, thereby avoiding the situation that the unformed materials in the returned materials are mixed with the granular materials, which will affect the subsequent processing. There is no need for subsequent additional treatment or screening to separate the returned materials, thereby reducing the production cost and time. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 It is a schematic diagram of the structure from another perspective of the present invention;

[0019] Figure 3 It is a front cross-sectional view of the structure of the drum and the sleeve of the present invention;

[0020] Figure 4 It is a side cross-sectional view of the structure of the drum of the present invention.

[0021] In the figure: 1, chassis; 11, shaft seat; 12, idler roller; 2, drum; 21, feed inlet; 22, support ring; 3, drive mechanism; 31, drive motor; 32, spur gear; 33, gear ring; 4, sleeve; 41, annular filter screen; 5, aggregate cylinder; 6, first arc-shaped baffle; 7, second arc-shaped baffle; 71, chute; 72, stud; 8, tripod. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] Embodiment 1: A granulating device for compound fertilizer production, as Figures 1-4 shown, includes a chassis 1 and a drum 2. Four shaft seats 11 arranged in a rectangle are fixedly provided at the top of the chassis 1, and idler rollers 12 are rotatably provided on the shaft seats 11; the drum 2 is a cylindrical structure extending in the left-right direction and having a left opening structure. A feed inlet 21 is provided at the right end of the drum 2. Two support rings 22 are fixedly sleeved on the outer wall of the drum 2 at intervals left and right. The support rings 22 are provided on the idler rollers 12 in the same front-rear direction, and the support rings 22 are used to guide the rotation of the idler rollers 12.

[0024] A driving mechanism 3 is provided on the chassis 1. The driving mechanism 3 is used to drive the rotary drum 2 to rotate, so that the materials are continuously rolled, mixed and granulated in the rotary drum 2. Specifically, the driving mechanism 3 includes a driving motor 31 fixedly arranged on the chassis 1. A spur gear 32 is fixedly arranged on the output shaft of the driving motor 31. A gear ring 33 is fixedly sleeved in the middle of the outer wall of the rotary drum 2. The spur gear 32 meshes with the gear ring 33. When the driving motor 31 drives the spur gear 32 to rotate, the rotary drum 2 can be driven to rotate along the idler rollers 12 arranged in a rectangle under the action of the support ring 22 through the gear ring 33.

[0025] A sleeve 4 with left and right through holes is flange-connected to the left end of the rotary drum 2. The inner diameters of the rotary drum 2 and the sleeve 4 are the same, and the left end of the rotary drum 2 is communicated with the right end of the sleeve 4. A plurality of filter holes are arranged at intervals along the circumferential direction of the sleeve 4. The plurality of filter holes arranged at intervals along the circumferential direction together form an annular filter screen 41. The sleeve 4 is used to screen out the unformed materials through the annular filter screen 41 while rotating with the rotary drum 2, so as to avoid the unformed materials in the returned materials being mixed with the granulated materials, which will affect the subsequent processing. There is no need for subsequent additional treatment or screening to separate the returned materials, thus reducing the production cost and time.

[0026] An aggregate cylinder 5 is sleeved on the sleeve 4. There is a gap between the outer wall of the sleeve 4 and the inner wall of the aggregate cylinder 5. The annular filter screen 41 is located inside the aggregate cylinder 5. The aggregate cylinder 5 can prevent the materials adhered to the annular filter screen 41 from spreading everywhere and forming dust during the filtration of the granulated materials by the annular filter screen 41. The right end of the aggregate cylinder 5 is hermetically arranged with the outer wall of the sleeve 4. An annular cavity with a left opening structure is formed between the outer wall of the sleeve 4 and the inner wall of the aggregate cylinder 5. The annular cavity can collect the unformed materials filtered out from the annular filter screen 41, and can also prevent the unformed materials filtered out by the annular filter screen 41 from splashing everywhere under the action of rotational inertia. At the same time, under the action of rotating together with the sleeve 4 and the rotary drum 2, the aggregate cylinder 5 can discharge the unformed materials from the lower left end of the annular cavity for collection. And the left end of the sleeve 4 is located on the left side of the aggregate cylinder 5, so that the formed granulated materials discharged from the left end of the sleeve 4 and the unformed materials discharged from the left end of the aggregate cylinder 5 are arranged at intervals left and right, so as to facilitate the separate collection of the formed granulated materials and the unformed materials.

[0027] There are multiple baffle mechanisms arranged at intervals left and right inside the rotary drum 2. The baffle mechanisms are used to control the flow and mixing of materials inside the rotary drum. Specifically, the baffle mechanisms include multiple first arc-shaped baffles 6 fixedly arranged on the inner wall of the rotary drum 2. The first arc-shaped baffles 6 extend along the circumferential direction of the rotary drum 2, and multiple first arc-shaped baffles 6 are arranged at intervals along the circumferential direction of the rotary drum 2 for materials to pass through. A second arc-shaped baffle 7 is slidably arranged on the left side of the first arc-shaped baffle 6. The second arc-shaped baffle 7 has the same structure as the first arc-shaped baffle 6. By sliding the second arc-shaped baffle 7, the interval size between two adjacent first arc-shaped baffles 6 can be adjusted. A chute 71 is arranged on the second arc-shaped baffle 7 along its extending direction. A stud 72 extending leftward is fixedly arranged on the left side of the first arc-shaped baffle 6. The stud 72 slidably penetrates through the chute 71. The left end of the chute 71 penetrates out of the chute 71 and is fixedly provided with a nut. The stud 72 is used to clamp and fix the second arc-shaped baffle 7 on the first arc-shaped baffle 6 through the nut.

[0028] Both the first arc-shaped baffles 6 and the second arc-shaped baffles 7 are three in number. A tripod 8 is fixedly arranged on the left sides of the three second arc-shaped baffles 7 together. The tripod 8 is used to connect the second arc-shaped baffles 7, so that when adjusting the second arc-shaped baffles 7, the sliding distances of the three second arc-shaped baffles 7 are synchronized, making the adjustment of the interval size between two adjacent first arc-shaped baffles 6 tend to be consistent.

[0029] Working principle: During use, the sleeve 4 with the aggregate cylinder 5 is installed at the left end of the rotary drum 2. Then, the driving motor 31 is started. The driving motor 31 drives the spur gear 32 to rotate, and can drive the rotary drum 2 to rotate along the idler rollers 12 arranged in a rectangle under the action of the support ring 22. The rotating rotary drum 2 enables the materials to continuously roll, mix and granulate under the action of water or steam. At the same time, when the materials move leftward, the unformed materials enter the annular cavity between the aggregate cylinder 5 and the sleeve 4 through the annular filter screen 41 and are discharged from the left end of the annular cavity. The filtered pellets are discharged from the left end of the sleeve 4.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A granulating device for compound fertilizer production, characterized in that: It includes a chassis (1) and a rotary drum (2). Four shaft seats (11) arranged in a rectangle are fixedly provided at the top of the chassis (1), and a supporting roller (12) is rotatably provided on the shaft seat (11); the rotary drum (2) is a cylindrical structure extending in the left - right direction and having a left - open structure. A feed inlet (21) is provided at the right end of the rotary drum (2). Two support rings (22) spaced left - right are fixedly sleeved on the outer wall of the rotary drum (2), and the support rings (22) are arranged to roll on the supporting rollers (12) located in the same front - rear direction; a driving mechanism (3) is provided on the chassis (1), and the driving mechanism (3) is used to drive the rotary drum (2) to rotate. A sleeve (4) that is transparent left - right is flange - connected to the left end of the rotary drum (2). The inner diameters of the rotary drum (2) and the sleeve (4) are the same, and the left end of the rotary drum (2) is communicated with the right end of the sleeve (4). A plurality of filter holes spaced along the circumferential direction of the sleeve (4) are provided, and the plurality of filter holes spaced along the circumferential direction together form an annular filter screen (41), and the annular filter screen (41) is used to screen out the unformed materials.

2. The granulating device for compound fertilizer production according to claim 1, wherein: An aggregate cylinder (5) is sleeved on the sleeve (4). There is a space between the outer wall of the sleeve (4) and the inner wall of the aggregate cylinder (5), and the annular filter screen (41) is located inside the aggregate cylinder (5). The right end of the aggregate cylinder (5) is hermetically arranged with the outer wall of the sleeve (4), and an annular cavity with a left - open structure is formed between the outer wall of the sleeve (4) and the inner wall of the aggregate cylinder (5).

3. The granulating device for compound fertilizer production according to claim 2, characterized in that: The left end of the sleeve (4) is located to the left of the aggregate cylinder (5).

4. A granulating device for compound fertilizer production according to claim 1, characterized in that: The driving mechanism (3) includes a driving motor (31) fixedly provided on the chassis (1). A spur gear (32) is fixedly provided on the output shaft of the driving motor (31). A gear ring (33) is fixedly sleeved in the middle of the outer wall of the rotary drum (2), and the spur gear (32) meshes with the gear ring (33).

5. A granulation device for compound fertilizer production according to claim 1, characterized in that: A plurality of baffle mechanisms spaced left - right are provided inside the rotary drum (2). The baffle mechanisms are used to control the flow and mixing of materials in the rotary drum. The baffle mechanisms include a plurality of first arc - shaped baffles (6) fixedly provided on the inner wall of the rotary drum (2). The first arc - shaped baffles (6) extend along the circumferential direction of the rotary drum (2), and the plurality of first arc - shaped baffles (6) are spaced along the circumferential direction of the rotary drum (2).

6. The granulating device for compound fertilizer production according to claim 5, characterized in that: A second arc - shaped baffle (7) is slidably arranged on the left side of the first arc - shaped baffle (6). The second arc - shaped baffle (7) has the same structure as the first arc - shaped baffle (6). A chute (71) is provided on the second arc - shaped baffle (7) along its extending direction. A stud (72) extending leftward is fixedly provided on the left side of the first arc - shaped baffle (6). The stud (72) slidably passes through the chute (71), and the left end of the chute (71) passes through the chute (71) and is fixedly provided with a nut. The stud (72) is used to clamp and fix the second arc - shaped baffle (7) on the first arc - shaped baffle (6) through the nut.

7. The granulation device for compound fertilizer production according to claim 6, characterized in that: Both the first arc - shaped baffle (6) and the second arc - shaped baffle (7) are three in number, and a triangular frame (8) is fixedly provided on the left sides of the three second arc - shaped baffles (7).

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