High-tower granulation and caking screening mechanism for preparing humic acid type compound fertilizer

Abstract

The utility model relates to the technical field of compound fertilizer granulation, in particular to a high tower granulation caking screening mechanism for humic acid type compound fertilizer preparation, which comprises a supporting device and a screening device, the screening device comprises a shell and an arc-shaped screening plate mounted in the shell, and the arc-shaped screening plate is provided with a dispersing device in a sliding manner. According to the scheme, the screening device is arranged at the outlet of the high-tower granulator and comprises the shell and the arc-shaped screen plate, the shell is communicated with the feeding auger, the feeding auger is communicated with the crusher, the crusher is communicated with the shell, compound fertilizer particles entering the shell fall onto the arc-shaped screen plate, and particles meeting the screening requirement penetrate through the arc-shaped screen plate to fall off; particulate matters or caked compound fertilizer raw materials which do not meet the screening requirement are scattered by the dispersing device, are crushed again by the crusher and then enter the shell, so that circulating crushing and screening of the compound fertilizer particles are realized, and the discharged particulate matters are ensured to meet the screening requirement.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of compound fertilizer granulation, in particular to a high-tower granulation and agglomeration screening mechanism for preparing humic acid type compound fertilizer. Background Art

[0002] Humic acid compound fertilizer is made of humic acid as the main raw material, combined with certain nutrients such as nitrogen, phosphorus, potassium, etc. Due to the effect of humic acid, it can not only change the physical and chemical properties of single fertilizers and improve their use effect, but also stimulate crop growth and improve soil texture. Therefore, the fertilizer efficiency of humic acid compound fertilizer is superior to that of inorganic compound fertilizer.

[0003] In the prior art, the production process of humic acid compound fertilizer is as follows: urea is mixed with a small amount of potassium chloride and transported to the top of the granulation tower. After being measured by an electronic belt scale, it enters the urea melting tank and is heated and melted with heat transfer oil. The molten liquid flows into the heating mixing tank by gravity, and the heated potassium sulfate, urease inhibitor, phosphorus activator, agricultural selenium fertilizer, zinc sulfate, and borax are added. They are heated and mixed together with the urea molten liquid. Under the temperature of the molten liquid and the solid material itself and the mechanical stirring action, they are quickly mixed to form a low-temperature eutectic with a certain fluidity. The eutectic flows into the emulsification tank by gravity, and then monoammonium phosphate and powdered material humic acid are added, and high-speed stirring, mixing, and shearing are performed to form an emulsified granulation slurry with good fluidity. The granulation slurry enters the granulation device by gravity for spray granulation. When the spray droplets fall in the granulation tower, they come into contact with the rising air flow and the forced cooling wind sent by the cooling fan in the tower, and then cooling and solidification occurs, forming particles, which are scattered at the bottom of the tower. The granular materials are collected at the bottom of the tower and transported to the drum cooler by a belt conveyor for secondary cooling. The products are then obtained after screening, coating, metering and packaging.

[0004] The moisture content of fertilizer is the biggest factor causing fertilizer to agglomerate during storage. The higher the moisture content, the easier it is for the salt in the fertilizer particles to dissolve, and the easier it is for physical and chemical reactions to occur. After recrystallization, agglomerates are easily formed, and repeated dissolution-crystallization processes will lead to severe agglomeration. When fertilizers agglomerate, it will be difficult for crops to absorb them when applied on the soil surface, reducing the utilization rate of fertilizers and also possibly causing certain impacts on the soil. In the process of forming compound fertilizer raw materials into particles, the high tower granulator in the prior art is prone to agglomeration due to the adhesion of raw materials, which makes it impossible to directly use the particles discharged from the high tower granulator, affecting the granulation effect of the compound fertilizer and the use effect of the fertilizer particles. Utility Model Content

[0005] The utility model aims to provide a high-tower granulation and agglomeration screening mechanism for preparing humic acid type compound fertilizer, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer comprises a supporting device and a screening device, wherein the supporting device comprises an upper supporting frame and a lower supporting frame, a high-tower granulator is installed on the upper supporting frame, the screening device is installed between the upper supporting frame and the lower supporting frame, the screening device is connected with the discharge port of the high-tower granulator, the screening device comprises a shell, an arc-shaped screen plate installed inside the shell, two dispersing devices are symmetrically slidably arranged on both sides of the arc-shaped screen plate, the lower part of the shell is connected with the feed end of a feeding auger through a second material pipe, the discharge end of the feeding auger is connected with the feed end of a crusher, and the discharge end of the crusher is connected with the upper part of the shell through a first material pipe.

[0008] As a further solution of the utility model: the upper support frame is fixedly connected to the lower support frame through a plurality of connecting brackets, a plurality of supporting legs are arranged at the bottom of the lower support frame, the feeding auger is installed between the upper support frame and the lower support frame, and the crusher is installed on the upper support frame.

[0009] As a further solution of the utility model: the dispersion device includes a sliding plate and dispersion blades, the sliding plate includes a horizontal section and an arc section, one end of the arc section is connected to the horizontal section, and the other end of the arc section is equipped with a plurality of cutters.

[0010] As a further solution of the utility model: the dispersion blades are rotatably mounted on the horizontal section of the sliding plate via a rotating shaft, a plurality of dispersion blades are symmetrically mounted on the circumference of the rotating shaft, and the dispersion blades include a vertical portion and a raised portion.

[0011] As a further solution of the utility model: a driving mechanism for driving the dispersion device to slide is also arranged on the outer side of the shell, and the driving mechanism includes a base, a slider, an arc-shaped rack and a fan-shaped gear. The base is fixedly mounted on the shell, and the slider is slidably mounted inside the base, and the slider is connected to one side of the base through a reset spring; the arc-shaped rack is fixedly connected to the slider, and the fan-shaped gear is rotatably mounted on the shell through a rotating shaft, and the fan-shaped gear is meshed with the arc-shaped rack.

[0012] As a further solution of the utility model: the arc-shaped rack and the arc-shaped screen plate have the same curvature, a cover plate is arranged between the arc-shaped rack and the base, the cover plate is fixedly mounted on the base, and a first through groove is opened on the cover plate, and a second through groove is opened on the base, one side of the slider passes through the first through groove and is connected to the arc-shaped rack, and the other side of the slider passes through the second through groove and is connected to the dispersion device.

[0013] As a further solution of the utility model: a rotating motor for driving the rotating shaft to rotate is also installed on the housing.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the present scheme arranges a screening device at the outlet of the high tower granulator, the screening device comprises a shell, an arc-shaped screen plate installed inside the shell, the lower part of the shell is connected with a feeding auger, the feeding auger is connected with a crusher, the crusher is connected with the upper part of the shell, the compound fertilizer particles entering the shell fall onto the arc-shaped screen plate, among the compound fertilizer particles, the particles meeting the screening requirements pass through the arc-shaped screen plate and fall, the particles not meeting the screening requirements or agglomerated compound fertilizer raw materials are scattered to both sides of the shell, the agglomerated compound fertilizer raw materials are broken up by a dispersion device, and then are crushed again by the crusher and enter the shell, thereby realizing the cyclic crushing and screening of the compound fertilizer particles, and ensuring that the discharged particles meet the screening requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the high tower granulation agglomeration and screening mechanism for preparing humic acid type compound fertilizer.

[0016] Figure 2 A schematic diagram of the structure of the screening device in the high-tower granulation and agglomeration screening mechanism for preparing humic acid type compound fertilizer.

[0017] Figure 3 Rear view of a high tower granulation and agglomeration screening mechanism for preparing humic acid type compound fertilizer.

[0018] Figure 4 Schematic diagram of the structure of the driving mechanism in the high-tower granulation and agglomeration screening mechanism for the preparation of humic acid compound fertilizer.

[0019] Figure 5 A schematic diagram of the structure of the dispersion device in the high-tower granulation and agglomeration screening mechanism for the preparation of humic acid compound fertilizer.

[0020] Figure 6 A side view of a dispersing device in a high-tower granulation and agglomeration screening mechanism for preparing humic acid type compound fertilizer.

[0021] In the figure: 10-support device, 11-upper support frame, 12-connecting bracket, 13-lower support frame, 14-support leg, 20-high tower granulator, 30-feeding auger, 40-crusher, 50-screening device, 51-shell, 511-feeding port, 512-discharging barrel, 52-arc sieve plate, 53-dispersing device, 531-sliding plate, 532-cutter, 533-rotating shaft, 534-dispersing blade, 5341-vertical part, 5342-lifting part, 535-control motor, 54-mounting frame, 55-first material pipe, 56-second material pipe, 57-driving mechanism, 571-base, 572-sliding block, 573-reset spring, 574-cover plate, 575-arc rack, 576-sector gear, 577-rotating shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 6 In an embodiment of the utility model, a high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer comprises a supporting device 10 and a screening device 50, wherein the supporting device 10 comprises an upper supporting frame 11 and a lower supporting frame 13, a high-tower granulator 20 is installed on the upper supporting frame 11, and the screening device 50 is installed between the upper supporting frame 11 and the lower supporting frame 13, and the screening device 50 is connected with the discharge port of the high-tower granulator 20. It should be noted that the high-tower granulator 20 in this embodiment adopts the compound fertilizer high-tower granulator in the prior art. In the high tower, the gas forms a rotating flow through the action of the blade, so that the compound fertilizer raw material is evenly dispersed into particles, and quickly dried in the air to form dry particles and fall into the screening device 50;

[0024] In the embodiment of the present application, the screening device 50 includes a shell 51, an arc-shaped screen plate 52 installed inside the shell 51, and two dispersing devices 53 are symmetrically slidably arranged on both sides of the arc-shaped screen plate 52. The lower part of the shell 51 is connected with the feeding end of the feeding auger 30 through the second material pipe 56, and the discharging end of the feeding auger 30 is connected with the feeding end of the crusher 40. The discharging end of the crusher 40 is connected with the upper part of the shell 51 through the first material pipe 55. The compound fertilizer particles entering the shell 51 fall onto the arc-shaped screen plate 52. Among the compound fertilizer particles, particles that meet the screening requirements (particle size is smaller than the sieve hole of the arc-shaped screen plate 52) pass through the arc-shaped screen plate 52 and fall, and particles that do not meet the screening requirements fall. The required particles or agglomerated compound fertilizer raw materials are scattered to both sides of the shell 51. The particles or agglomerated compound fertilizer raw materials that do not meet the screening requirements collide with the dispersion device 53 during the scattering process. The agglomerated compound fertilizer raw materials are broken up by the dispersion device 53 to disperse the agglomerated compound fertilizer raw materials into particles. During this process, the particles continuously move inside the shell 51 and collide with the arc sieve plate 52. The particles that meet the screening requirements pass through the arc sieve plate 52 and are discharged. The particles that do not meet the screening requirements enter the feeding auger 30, and then are crushed again by the crusher 40 and enter the shell 51, thereby realizing the cyclic crushing and screening of the compound fertilizer particles, and ensuring that the discharged particles meet the screening requirements.

[0025] It should be noted that, in the embodiment of the present application, the side of the arc-shaped sieve plate 52 is fixedly mounted on the shell 51 by a mounting frame 54, and the feed port of the discharge barrel 512 is arranged directly below the arc-shaped sieve plate 52, and the discharge barrel 512 is used to receive the sieved compound fertilizer particles; in addition, a feed port 511 is opened on the upper part of the shell 51, and the feed port 511 is used to introduce the compound fertilizer particles discharged from the high-tower granulator 20 into the interior of the shell 51.

[0026] Please refer again Figure 1 In the embodiment of the present application, the upper support frame 11 is fixedly connected to the lower support frame 13 through a plurality of connecting brackets 12, and a plurality of supporting legs 14 are provided at the bottom of the lower support frame 13, and the supporting legs 14 are used to support the device as a whole; in addition, the feeding auger 30 is installed between the upper support frame 11 and the lower support frame 13, and the crusher 40 is installed on the upper support frame 11. The feeding auger 30 and the crusher 40 both adopt the equipment disclosed in the prior art, and this embodiment will not be described in detail here.

[0027] See also Figure 5 and Figure 6 In the embodiment of the present application, the dispersing device 53 includes a sliding plate 531 and a dispersing blade 534. The sliding plate 531 includes a horizontal section and an arc section. The arc of the arc section is the same as the arc of the arc screen plate 52. One end of the arc section is connected to the horizontal section, and the other end of the arc section is equipped with a plurality of cutters 532. The cutters 532 are used to cut and crush large-size particles or agglomerated particles, so that the large-size particles or agglomerated particles are formed into small-size particles that meet the screening requirements; the dispersing blade 534 is rotatably installed on the horizontal section of the sliding plate 531 through the rotating shaft 533, and the dispersing blade 534 is rotatably installed on the horizontal section of the sliding plate 531 through the rotating shaft 533. A plurality of dispersing blades 534 are symmetrically installed around the rotating shaft 533. The dispersing blades 534 include a vertical portion 5341 and a tilting portion 5342. The rotating shaft 533 controls the rotation of the dispersing blades 534 so that the dispersing blades 534 beat the compound fertilizer particles. During the beating process, the tilting portion 5342 applies an oblique force to the compound fertilizer particles, so that the compound fertilizer particles continuously collide with the inner wall of the shell 51 and the arc-shaped screen plate 52 inside the shell 51. In the process of beating and dispersing the agglomerated compound fertilizer, the compound fertilizer particles are accelerated to pass through the arc-shaped screen plate 52, thereby improving the screening efficiency of the compound fertilizer.

[0028] Furthermore, a control motor 535 for controlling the rotation of the rotating shaft 533 is also installed on the horizontal section of the sliding plate 531; in addition, the arc section of the sliding plate 531 can also be set as a filter plate structure, such as Figure 6 As shown, this arrangement can improve the screening efficiency of compound fertilizer particles.

[0029] See also Figure 3 and Figure 4In the embodiment of the present application, a driving mechanism 57 for driving the dispersion device 53 to slide is further provided on the outer side of the housing 51. The driving mechanism 57 includes a base 571, a slider 572, an arc-shaped rack 575 and a sector gear 576. The base 571 is fixedly mounted on the housing 51. The slider 572 is slidably mounted inside the base 571. The slider 572 is connected to one side of the base 571 through a reset spring 573. The arc-shaped rack 575 is fixedly connected to the slider 572. The sector gear 576 is rotatably mounted on the housing 51 through a rotating shaft 577. The sector gear 576 meshes with the arc-shaped rack 575 under the cooperation of the reset spring 573. The sector gear 576 intermittently controls the arc-shaped rack 575 and the slider 572 to slide back and forth.

[0030] Furthermore, in the embodiment of the present application, the arc-shaped rack 575 has the same curvature as the arc-shaped screen plate 52, a cover plate 574 is arranged between the arc-shaped rack 575 and the base 571, the cover plate 574 is fixedly mounted on the base 571, and a first through groove is opened on the cover plate 574, a second through groove is opened on the base 571, one side of the slider 572 passes through the first through groove to be connected to the arc-shaped rack 575, and the other side of the slider 572 passes through the second through groove to be connected to the dispersion device 53; in addition, a rotating motor for driving the rotating shaft 577 to rotate is also installed on the shell 51.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer, comprising a supporting device (10) and a screening device (50), wherein the supporting device (10) comprises an upper supporting frame (11) and a lower supporting frame (13), a high-tower granulator (20) is installed on the upper supporting frame (11), the screening device (50) is installed between the upper supporting frame (11) and the lower supporting frame (13), and the screening device (50) is connected to the discharge port of the high-tower granulator (20), characterized in that: The screening device (50) comprises a shell (51) and an arc-shaped screen plate (52) installed inside the shell (51). Two dispersion devices (53) are symmetrically and slidably arranged on both sides of the arc-shaped screen plate (52). The lower part of the shell (51) is connected to the feeding end of the feeding auger (30) through a second material pipe (56), the discharging end of the feeding auger (30) is connected to the feeding end of the crusher (40), and the discharging end of the crusher (40) is connected to the upper part of the shell (51) through a first material pipe (55).

2. The high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer according to claim 1, characterized in that: The upper support frame (11) is fixedly connected to the lower support frame (13) via a plurality of connecting brackets (12); a plurality of supporting legs (14) are provided at the bottom of the lower support frame (13); the loading auger (30) is installed between the upper support frame (11) and the lower support frame (13); and the crusher (40) is installed on the upper support frame (11).

3. The high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer according to claim 1, characterized in that: The dispersion device (53) comprises a sliding plate (531) and a dispersion blade (534); the sliding plate (531) comprises a horizontal section and an arc section; one end of the arc section is connected to the horizontal section; and the other end of the arc section is provided with a plurality of cutters (532).

4. The high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer according to claim 3, characterized in that: The dispersion blades (534) are rotatably mounted on the horizontal section of the sliding plate (531) via the rotating shaft (533), and a plurality of dispersion blades (534) are symmetrically mounted on the circumference of the rotating shaft (533). The dispersion blades (534) include a vertical portion (5341) and a raised portion (5342).

5. The high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer according to claim 4, characterized in that: The outer side of the shell (51) is also provided with a driving mechanism (57) for driving the dispersion device (53) to slide. The driving mechanism (57) comprises a base (571), a slider (572), an arc-shaped rack (575) and a fan-shaped gear (576). The base (571) is fixedly mounted on the shell (51). The slider (572) is slidably mounted inside the base (571). The slider (572) is connected to one side of the base (571) via a return spring (573). The arc-shaped rack (575) is fixedly connected to the slider (572). The fan-shaped gear (576) is rotatably mounted on the shell (51) via a rotating shaft (577). The fan-shaped gear (576) is meshed with the arc-shaped rack (575).

6. The high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer according to claim 5, characterized in that: The arc-shaped rack (575) has the same curvature as the arc-shaped screen plate (52); a cover plate (574) is provided between the arc-shaped rack (575) and the base (571); the cover plate (574) is fixedly mounted on the base (571); a first through slot is provided on the cover plate (574); a second through slot is provided on the base (571); one side of the slider (572) passes through the first through slot to be connected to the arc-shaped rack (575); and the other side of the slider (572) passes through the second through slot to be connected to the dispersion device (53).

7. The high-tower granulation and agglomeration screening mechanism for preparing humic acid compound fertilizer according to claim 6, characterized in that: The housing (51) is also provided with a rotating motor for driving the rotating shaft (577) to rotate.

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