A granulator suitable for organic fertilizer production

Abstract

The present invention relates to the technical field of granulation equipment, and specifically discloses a granulator suitable for organic fertilizer production, which includes a machine body, a granulation disk and a driving device, a plurality of aggregate grids are arranged outside the granulation disk, and a movable bottom plate is rotatably fixed at the lower end of each aggregate grid; a door opening mechanism, a cooling device and an arc body are fixed on the machine body, and during the rotation of the granulation disk, each movable bottom plate cooperates with the door opening mechanism in turn to open the lower port of the aggregate grid; the cooling device collects the particles discharged from the aggregate grid and performs cooling treatment; the arc body is hollow inside and connected to a hot air supply device, and an exhaust hole is opened on the arc body. The granulator adopts an integrated compact design, realizes the continuous operation of granulation, drying and cooling, shortens the production process, improves production efficiency, reduces initial investment and subsequent operation and maintenance costs, can significantly reduce the generation of returned materials and reduce the energy consumption of equipment operation, is extremely suitable for granulation processing in organic fertilizer production, and has broad application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of granulation equipment, in particular to a granulator suitable for organic fertilizer production. Background Art

[0002] In the production process of organic fertilizer, in order to facilitate storage, transportation and application, it is usually necessary to use granulation equipment to make organic fertilizer products into granular form. Affected by the existing production process of organic fertilizer, the organic fertilizer materials to be granulated usually have a high humidity, resulting in a high moisture content and poor hardness of the formed granules. Necessary drying and cooling treatments are required to reduce the moisture content of the granules and increase the hardness of the granules to meet the parameter requirements of organic fertilizer products. Existing granulation equipment generally does not have drying and cooling functions. After the organic fertilizer is granulated, the granules need to be transported to the drying equipment for drying treatment, and then transported to the cooling equipment for cooling treatment. The whole process involves the coordination and cooperation of multiple professional equipment, which not only increases the equipment investment requirements, but also comes with higher maintenance costs, and also increases the requirements for the space conditions of the production workshop.

[0003] In addition, it is worth noting that the hardness of the organic fertilizer particles output by the granulation equipment is poor. During the long-distance transportation process using conveying equipment, it is very easy to cause physical damage, such as particle breakage and fragmentation, which leads to an increase in returned materials, reduces the overall production efficiency of organic fertilizers, and increases the production cost of organic fertilizers. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a granulator suitable for the production of organic fertilizer. The granulator takes the structure and granulation principle of the existing disc granulator as a basis, and an aggregate grid rotating with the disc is arranged on the periphery of the granulation disc. Components such as a door opening mechanism, a cooling device, an arc body and a hot air supply device are reasonably arranged on the moving path of the aggregate grid. The granulator, based on its own structural characteristics, organically combines the granulation function, the drying function and the cooling function into one, so that there is no need to additionally arrange drying equipment and cooling equipment for subsequent treatment of the particles, thereby reducing the initial investment in the equipment and the subsequent maintenance cost; at the same time, since the transportation link of the particles between different devices is saved, the particle breakage caused by transportation can be effectively reduced, and the returned material can be reduced, thereby improving the comprehensive processing efficiency and reducing the production cost.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A granulator suitable for organic fertilizer production, comprising a machine body, a granulator disc and a driving device; the granulator disc is supported by the machine body in an inclined state and driven to rotate by the driving device; the characteristics are: an outer ring is fixed on the outer side of the granulator disc, an annular sandwich is formed between the granulator disc and the outer ring, the annular sandwich is divided by a plurality of partitions to form a plurality of aggregate grids, a movable bottom plate is rotatably fixed at the lower end of each aggregate grid, the movable bottom plate blocks the lower port of the aggregate grid when it is in the initial position, and the movable bottom plate is driven by an elastic member to automatically reset to the initial position; an opening door is fixed on the machine body mechanism, a cooling device and an arc-shaped body; during the rotation of the granulating disk, each movable bottom plate cooperates with the door opening mechanism in turn and is driven by the door opening mechanism to rotate downward during the period of moving from a high position to a low position, so that the lower port of the aggregate grid is opened; the cooling device collects the particles discharged from the lower port of the aggregate grid and cools them; the arc-shaped body extends along the upper port of the annular interlayer, and the two ends of the arc-shaped body are close to the lower end of the granulating disk; the interior of the arc-shaped body is hollow, and its inner cavity is connected to a hot air supply device, and the arc-shaped body is provided with exhaust holes for discharging the internal gas into the annular interlayer.

[0007] The working principle of the granulator in the present invention is:

[0008] The granulating disc can granulate powdered organic fertilizer by rotating, and the granulating principle is the same as that of the existing disc granulator; the balled particles fall off the disc from the lowest point of the granulating disc and enter the corresponding aggregate grid; during the continuous granulation process, the aggregate grid carries the particles and moves with the rotation of the granulating disc, and when the aggregate grid moves on the lower side of the arc-shaped body, the arc-shaped body discharges the hot air supplied by the hot air supply device into the aggregate grid to dry the particles; when the aggregate grid moves from high to low, the door opening mechanism drives the movable bottom plate to rotate downward to open the lower port of the aggregate grid, and the particles in the aggregate grid are discharged through the lower port and fall into the cooling device, and the cooling device performs a final cooling treatment on the dried particles, thereby reducing the moisture content of the particles and increasing the hardness of the particles to meet the parameter requirements of organic fertilizer.

[0009] Compared with the prior art, the granulator provided by the present invention has the following beneficial technical effects:

[0010] This granulator adopts an integrated compact design, which realizes the continuous operation of granulation, drying and cooling, effectively shortens the production process, improves production efficiency, avoids the disadvantages of the traditional model that requires additional independent drying equipment and cooling equipment, significantly reduces the floor space requirements of the production workshop, and greatly reduces the initial investment and subsequent operation and maintenance costs. Since the long-distance transportation of particles between different equipment is reduced, the physical damage of particles caused by transportation, such as particle breakage and deformation, is avoided, thereby improving the spherical integrity and particle size uniformity of the particles, reducing the return rate due to substandard quality, and improving the comprehensive processing efficiency and processing cost of organic fertilizers. The structure of this granulator is scientific and reasonable. It makes full use of the inherent characteristics of the disc granulator and cleverly combines the flow path of the particles with the rotation and movement of the granulating disc, making the overall structure of the equipment relatively simple, with fewer power sources, low operating energy consumption, high stability and reliability, and a high degree of automation in actual production. No human intervention is required, which greatly improves production efficiency and quality. It is extremely suitable for granulation processing in organic fertilizer production, and can also be used for granulation processing of other products with similar production conditions to organic fertilizer, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0012] Figure 1 It is a schematic structural diagram of the front side of the granulator in the embodiment.

[0013] Figure 2 It is a schematic structural diagram of the rear side of the granulator in the embodiment.

[0014] Figure 3 Schematic diagram of the structure of the machine body and the arc-shaped body in the embodiment.

[0015] Figure 4 It is a schematic structural diagram of the upper side of the granulation disk in the embodiment.

[0016] Figure 5 It is a schematic structural diagram of the lower side of the granulation disk in the embodiment.

[0017] Figure 6 It is a schematic diagram of the coordination of the aggregate grid, elastic member and movable bottom plate in the embodiment.

[0018] Figure 7 Schematic diagram of the cooperation between the door opening mechanism and the movable bottom plate in the embodiment.

[0019] Figure 8 Schematic diagram of the state of the granulator when the granulation disk rotates in the embodiment.

[0020] Fig. 9 It is a schematic diagram of the state in which the door opening mechanism drives the movable bottom plate to rotate downward when the granulating disk rotates in the embodiment.

[0021] In the figure: 1, partition, 2, aggregate grid, 3, cooling device, 4, receiving hopper, 5, support arm, 6, support frame, 7, scraper, 8, granulation disk, 9, arc body, 10, protrusion, 101, rotating wheel, 102, column head, 11, movable bottom plate, 12, outer ring, 13, machine body, 131, machine base, 132, inclined frame, 133, telescopic arm, 14, main shaft, 15, bushing, 16, elastic member, 17, door opening mechanism, 171, guide curved surface, 18, hose, 19, hot air supply device, 20, driving device, 21, exhaust hole, 22, hinged seat, 23, limit part. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] See also Figure 1 , Figure 2As shown, this embodiment shows the specific structure of the granulator suitable for organic fertilizer production in the present invention, the granulator includes a body 13, a granulation disk 8 and a driving device 20; the granulation disk 8 is disc-shaped, supported by the body 13, and can rotate in an inclined state, and the granulation disk 8 is driven by the driving device 20; the above structure essentially constitutes a disc granulator, which is a common granulation equipment in the prior art, and the specific structural form and matching method of the body 13, the granulation disk 8 and the driving device 20 can be flexibly implemented with reference to the commonly used designs in the prior art.

[0025] See also Figure 4 , Figure 5 , Figure 6 As shown, a circular outer ring 12 is fixed to the outside of the granulating disk 8, the central axes of the granulating disk 8 and the outer ring 12 coincide with each other, and an annular interlayer is formed between the granulating disk 8 and the outer ring 12; a plurality of partitions 1 are arranged in the annular interlayer, one end of the partition 1 is fixedly connected to the granulating disk 8, and the other end of the partition 1 is fixedly connected to the outer ring 12, thereby making the structure composed of the granulating disk 8, the outer ring 12 and the partition 1 have good stability; the partition 1 divides the internal space of the annular interlayer, thereby forming a plurality of aggregate grids 2 distributed on the outside of the granulating disk 8; each A movable bottom plate 11 is rotatably fixed at the lower end of the aggregate grid 2. When the movable bottom plate 11 is in the initial position, the lower port of the aggregate grid 2 is blocked. The movable bottom plate 11 can be rotated downward from the initial position to open the lower port of the aggregate grid 2; an elastic member 16 is installed between the granulation disk 8 or the outer ring 12 and each movable bottom plate 11, and the movable bottom plate 11 is driven by the corresponding elastic member 16 to automatically reset to the initial position; based on the above-mentioned setting intention of the elastic member 16 in the present invention, it can be combined with the specific placement method of the movable bottom plate 11 to select common components such as springs, torsion springs, elastic sheets, etc.

[0026] See also Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig. 9As shown, a door opening mechanism 17, a cooling device 3 and an arc-shaped body 9 are fixed on the machine body 13; during the rotation of the granulation disk 8, each movable bottom plate 11 will cooperate with the door opening mechanism 17 in turn when passing the same position while moving from a high place to a low place, and will be driven by the door opening mechanism 17 to rotate downward, so that the lower port of the aggregate grid 2 is forced to open, and at this time, the particles in the aggregate grid 2 will be discharged from the lower port based on gravity; based on the above-mentioned setting intention of the door opening mechanism 17 in the present invention, it adopts the existing technical means to have a variety of implementation structures, such as the door opening mechanism 17 can be a reciprocating telescopic mechanism or a rotating mechanism, so that each movable bottom plate 11 that rotates with the granulation disk 8 can be pushed in turn, so that the movable bottom plate 11 rotates downward; when the movable bottom plate 11 moves to the position that is consistent with the door opening mechanism 17 After the mechanism 17 is disengaged, the movable bottom plate 11 will be driven by the elastic member 16 to reset to the initial position, that is, the lower port of the aggregate grid 2 will resume the blocked state; the cooling device 3 is located below the granulation disk 8, and it can collect and cool the particles discharged from the lower port of the aggregate grid 2; the arc body 9 is arc-shaped, extending along the upper port of the annular interlayer, and the two ends of the arc body 9 are close to the lower end of the granulation disk 8, so that during the rotation of the granulation disk 8, the aggregate grid 2 will not be blocked by the arc body 9 when it moves to a lower place, and then the particles that fall off the lower end of the granulation disk 8 can fall into the corresponding aggregate grid 2; the arc body 9 is hollow inside, and the inner cavity of the arc body 9 is connected to a hot air supply device 19, and the arc body 9 is provided with an exhaust hole 21 for discharging the internal gas into the annular interlayer.

[0027] The working principle of this granulator suitable for organic fertilizer production is:

[0028] 1. Granulation stage.

[0029] During the rotation of the granulating disk, powdered organic fertilizer can be granulated. The granulation principle is consistent with the existing disc granulator. Specifically, during the rotation of the granulating disk in an inclined state, the powdered material with a certain humidity in the disk is driven to move. Under the multiple effects of centrifugal force, gravity, friction and water tension, the material agglomerates, compresses and gradually forms balls. The balled particles continue to roll, rub and collide in the granulating disk, making the surface of the particles gradually smooth and improving their strength. As the number of particles increases and becomes larger, the larger particles float on the surface of the material and will continuously fall off the lower edge of the granulating disk and roll into the corresponding aggregate grid.

[0030] 2. Drying treatment.

[0031] like Figure 1 , Figure 8As shown, as the granulation continues, each aggregate grid 2 carries the particles that have fallen off the plate and moves with the rotation of the granulation plate 8. When the aggregate grid 2 passes under the arc-shaped body 9, the hot air output by the hot air supply device 19 is discharged into the aggregate grid 2 through the arc-shaped body 9, thereby drying the particles in the aggregate grid 2. During the movement of the aggregate grid 2, the stress state of the particles inside continues to change, and they will flow and tumble in the aggregate grid 2, thereby achieving a uniform and efficient drying effect.

[0032] 3. Cooling treatment.

[0033] like Figure 8 , Fig. 9 As shown, as the granulation disk 8 rotates, when the aggregate grid 2 passes the door opening mechanism 17, the door opening mechanism 17 drives the movable bottom plate 11 to rotate downward, so that the lower port of the aggregate grid 2 is opened, and the particles in the aggregate grid 2 will fall into the cooling device 3 and be cooled in the cooling device 3.

[0034] Based on the above working principle, as the granulation proceeds, the particles enter each aggregate grid one after another, and complete the drying process as the aggregate grid moves, and finally are discharged into the cooling device for cooling, thereby making the moisture content and hardness of the particles meet the parameter requirements of organic fertilizer.

[0035] Specifically, Figure 2 , Figure 3 , Figure 5 As shown, an inclined sleeve 15 is fixedly mounted on the machine body 13, and a main shaft 14 is fixedly connected to the lower side of the granulation disk 8. The main shaft 14 and the sleeve 15 are rotatably matched, so that the granulation disk 8 is supported by the machine body 13 in an inclined state and can rotate; the main shaft 14 and the driving device 20 are connected by a transmission mechanism such as a belt, chain or gear, so that the driving device 20 can drive the granulation disk 8 to rotate.

[0036] Specifically, Figure 6 As shown, a hinge seat 22 is provided on the lower side of the aggregate grid 2, and the hinge seat 22 is fixed to the outer side of the granulation disk 8. The end of the movable bottom plate 11 close to the granulation disk 8 is rotatably connected to the hinge seat 22 via a hinge shaft; the elastic member 16 is an elastic sheet in a corner shape, and the elastic sheet is limited by a limiting portion 23, and its two ends are respectively kept in contact with the movable bottom plate 11 and the granulation disk 8.

[0037] Specifically, the hot air supply device involved in the present invention has the function of generating hot air, utilizing the efficient heat transfer characteristics of hot air to promote the evaporation of water in particles, and achieving the expected drying effect; the device is a commonly used device in current industrial drying processing technology, and mature equipment such as hot air furnaces and hot air generators can be selected; in addition, in combination with existing mature control technologies, the temperature, wind pressure and other parameters of the hot air output by the hot air supply device can be accurately controlled, thereby ensuring that under different production conditions, good drying effects and high drying efficiency can be achieved for the particles.

[0038] Specifically, the cooling device involved in the present invention is used to cool the particles with a high temperature after drying. The device is a commonly used device in industrial production. Commonly used equipment such as countercurrent coolers or fluidized bed coolers can be selected according to actual needs.

[0039] So far, the core structure and function realization path of the technical solution of the present invention have been clearly and completely described, and it is implemented in combination with the existing technical achievements in this technical field without any technical obstacles or barriers; when the granulator in the present invention adopts the above structure, it has the following technical advantages compared with the existing technology:

[0040] This granulator organically combines key functions such as granulation, drying and cooling, adopts an integrated compact design, realizes continuous operation of granulation, drying and cooling, effectively shortens the production process, improves production efficiency, avoids the disadvantages of the traditional model that requires additional configuration of independent drying equipment and cooling equipment, significantly reduces the floor space requirement of the production workshop, and greatly reduces the initial investment and subsequent operation and maintenance costs.

[0041] During the granulation production process, this granulator reduces the long-distance transportation of particles between different equipment, avoids physical damage to the particles caused by transportation, such as particle breakage or deformation, thereby improving the spherical integrity and particle size uniformity of the particles, reducing the return rate due to substandard quality, and improving the production efficiency and production cost of organic fertilizers.

[0042] The structure adopted by this granulator is scientific and reasonable. It makes full use of the inherent characteristics of the disc granulator and cleverly combines the flow path of the particles with the rotation and movement of the granulating disc. During the rotation of the granulating disc, the aggregate grid can carry the particles into each process link in turn, and can automatically collect, discharge and turn the particles, realizing the smooth transition of the particles in the granulation, drying and cooling stages. The overall structure of the equipment is relatively simple, the operating energy consumption is low, the stability and reliability are high, and it can realize automated production without human intervention, thereby improving production efficiency and production quality.

[0043] Based on the above technical advantages, this granulator is extremely suitable for granulation processing in organic fertilizer production, and can also be used for granulation processing of other products with similar production conditions as organic fertilizer, and has broad application prospects.

[0044] In addition, in order to make the technical solution of the present invention easier to implement and ensure better working performance after implementation, in this embodiment, examples are given of specific structures preferably adopted for some technical features; optionally, the granulator in the present invention may also have one or more of the following technical features according to actual needs:

[0045] Preferably, Figure 4 As shown, the partitions 1 are distributed in an axial array with the central axis of the granulating disk 8, and the partitions 1 are located on the radial plane of the granulating disk 8, so that all the aggregate grids 2 are evenly distributed on the outside of the granulating disk 8 and have a consistent shape, further improving the stability of the equipment operation.

[0046] Preferably, Figure 8 , Fig. 9 As shown, the upper end of the cooling device 3 is a feed port and a funnel-shaped receiving hopper 4 is installed on the feed port, thereby ensuring that the particles in the aggregate grid 2 can fall into the cooling device 3 smoothly.

[0047] Preferably, Figure 4 , Figure 6 As shown, the movable bottom plate 11 is provided with evenly distributed air holes to facilitate the dissipation of moisture in the particles, thereby improving the drying efficiency.

[0048] Preferably, Figure 2 , Figure 3 As shown, the machine body 13 includes a base 131, an inclined frame 132 and a telescopic arm 133. The lower end of the inclined frame 132 is rotatably connected to the base 131, the higher end of the inclined frame 132 is rotatably connected to one end of the telescopic arm 133, and the other end of the telescopic arm 133 is rotatably connected to the base 131. The base 131, the inclined frame 132 and the telescopic arm 133 are distributed in a triangle; the granulating disc 8, the driving device 20, the door opening mechanism 17 and the arc body 9 are all supported by the inclined frame 132; thus, the base 131, the inclined frame 132 and The telescopic arms 133 together form a stable supporting structure, which can provide stable support for the granulation disk 8; generally speaking, the granulation disk 8 has a technical requirement for adjustable angle so that the angle can be adjusted accordingly according to the properties of the raw materials and the expected particle size. When the machine body 13 adopts the above structure, the inclination angle of the inclined frame 132 can be adjusted by telescoping the telescopic arms 133, so as to adjust the inclination angle of the granulation disk 8, thereby improving the applicability of the granulator; the telescopic arms 133 preferably adopt commonly used telescopic devices such as cylinders or oil cylinders that have their own driving functions.

[0049] Preferably, Figure 1, Figure 2 , Figure 3 As shown, a support frame 6 extending to the top of the granulation disk 8 is fixedly connected to the body 13, and the arc-shaped body 9 is supported and fixed by the support frame 6. The support frame 6 is composed of a number of hollow tubes sealed and fixedly connected, so that a hot air flow channel communicating with the inner cavity of the arc-shaped body 9 is formed inside the support frame 6, and a joint communicating with the hot air flow channel is fixed on the support frame 6, and the joint is connected with the output end of the hot air supply device 19 through a hose 18; thus, the support frame 6 can provide support for the arc-shaped body 9 on the one hand, and on the other hand, the support frame 6 also serves as a pipeline to transport the hot air output by the hot air supply device 19 to the arc-shaped body 9 without setting up an additional hot air transport pipeline, so that the overall structure of the granulator is simpler and more compact; in addition, referring to the prior art, components such as a scraper 7 or a spray device can be set in the granulation disk 8 according to actual processing needs, and when there is such a technical requirement, the scraper 7 and the spray device can be supported by the support frame 6.

[0050] Preferably, Figure 6 , Figure 7 As shown, the end of the movable bottom plate 11 close to the granulation disk 8 is rotatably connected to the granulation disk 8, and the end of the movable bottom plate 11 away from the granulation disk 8 is provided with a protrusion 10, and the door opening mechanism 17 is a guide block, which is supported by an arm 5 and is located on the outside of the granulation disk 8, and the lower end of the guide block is provided with a guide curved surface 171 that cooperates with the protrusion 10; during the rotation of the granulation disk 8, the protrusion 10 moves along the guide curved surface 171 when passing under the guide block, thereby driving the movable bottom plate 11 to rotate and move downward; when the door opening mechanism 17 is implemented in this way, the structure is very simple, no power and transmission device are required, and the implementation cost is low; further, the protrusion 10 is composed of a rotatably matched column head 102 and a rotating wheel 101, and the column head 102 is fixedly connected to the movable bottom plate 11. During the rotation of the granulation disk 8, when the protrusion 10 passes under the guide block, the rotating wheel 101 rolls along the guide curved surface 171, thereby driving the movable bottom plate 11 to rotate and move downward.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0052] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A granulator suitable for organic fertilizer production, comprising a machine body, a granulator disc and a driving device; the granulator disc is supported by the machine body in an inclined state and driven to rotate by the driving device; its characteristics are: An outer ring is fixed on the outside of the granulating disk, and an annular sandwich is formed between the granulating disk and the outer ring. The annular sandwich is divided by a number of partitions to form a plurality of aggregate grids. A movable bottom plate is rotatably fixed to the lower end of each aggregate grid. When the movable bottom plate is in the initial position, the lower port of the aggregate grid is blocked. The movable bottom plate is driven by an elastic member to automatically reset to the initial position; a door opening mechanism, a cooling device and an arc-shaped body are fixed on the machine body; during the rotation of the granulating disk, each movable bottom plate cooperates with the door opening mechanism in turn and is driven by the door opening mechanism to rotate downward while moving from a high position to a low position, so that the lower port of the aggregate grid is opened; The cooling device collects the particles discharged from the lower port of the aggregate grid and performs cooling treatment; the arc body extends along the upper port of the annular interlayer, and the two ends of the arc body are close to the lower end of the granulation disk; the arc body is hollow inside, and its inner cavity is connected to a hot air supply device, and the arc body is provided with an exhaust hole for discharging the internal gas into the annular interlayer; a hinge seat is provided on the lower side of the aggregate grid, and the hinge seat is fixed to the outer side of the granulation disk, and the end of the movable bottom plate close to the granulation disk is rotatably connected to the hinge seat via a hinge shaft; the elastic member is an elastic sheet in the shape of a corner, and the elastic sheet is limited by a limit portion, and the two ends are respectively kept in contact with the movable bottom plate and the granulation disk.

2. The granulator suitable for organic fertilizer production according to claim 1, characterized in that: The partitions are distributed in an axial array with respect to the central axis of the granulation disk, and the partitions are located on a radial plane of the granulation disk.

3. The granulator suitable for organic fertilizer production according to claim 1, characterized in that: The upper end of the cooling device is a feed inlet and a funnel-shaped receiving hopper is installed on the feed inlet.

4. The granulator suitable for organic fertilizer production according to claim 1, characterized in that: The movable bottom plate is provided with evenly distributed ventilation holes.

5. The granulator suitable for organic fertilizer production according to claim 1, characterized in that: The machine body includes a machine base, an inclined frame and a telescopic arm. The lower end of the inclined frame is rotatably connected to the machine base, the higher end of the inclined frame is rotatably connected to one end of the telescopic arm, and the other end of the telescopic arm is rotatably connected to the machine base. The machine base, the inclined frame and the telescopic arm are distributed in a triangle. The granulating disk, the driving device, the door opening mechanism and the arc body are all supported by the inclined frame.

6. The granulator suitable for organic fertilizer production according to claim 1, characterized in that: A support frame extending to the top of the granulation disk is fixedly connected to the machine body, and the arc-shaped body is supported and fixed by the support frame. The support frame is composed of a plurality of hollow tubes sealed and fixedly connected, so that a hot air flow channel communicating with the inner cavity of the arc-shaped body is formed inside the support frame, and a joint communicating with the hot air flow channel is fixed on the support frame, and the joint is connected to the output end of the hot air supply device through a hose.

7. The granulator suitable for organic fertilizer production according to claim 1, characterized in that: The cooling device is a countercurrent cooler or a fluidized bed cooler.

8. The granulator suitable for organic fertilizer production according to claim 1, characterized in that: The end of the movable bottom plate close to the granulation disk is rotatably connected to the granulation disk, and a protrusion is provided at the end of the movable bottom plate away from the granulation disk. The door opening mechanism is a guide block, which is supported by an arm and located outside the granulation disk. The lower end of the guide block is provided with a guide curved surface that cooperates with the protrusion. During the rotation of the granulation disk, the protrusion moves along the guide curved surface when passing under the guide block, thereby driving the movable bottom plate to rotate downward.

9. The granulator suitable for organic fertilizer production according to claim 8, characterized in that: The protrusion is composed of a rotatably matched column head and a rotating wheel. The column head is fixedly connected to the movable bottom plate. During the rotation of the granulation disk, when the protrusion passes under the guide block, the rotating wheel rolls along the guide curved surface, thereby driving the movable bottom plate to rotate and move downward.

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