Preparation device of ammoniated water-soluble granular compound fertilizer

Abstract

The invention relates to the technical field of chemical fertilizer preparation, in particular to a preparation device of ammoniated water-soluble granular compound fertilizer. The side wall of the stirring box is fixedly connected with a liquid storage box used for storing an ammoniating agent, and a stirring assembly used for stirring raw materials, a spraying assembly used for spraying the ammoniating agent, a granulation assembly used for extruding the raw materials into granules and a blowing assembly used for drying and cooling the granules are arranged in the stirring box; the stirring assembly comprises a controller and a driving part fixedly connected to the inner top wall of the stirring box, an output shaft of the driving part is coaxially and fixedly connected with a rotating shaft, and the rotating shaft is rotationally sleeved with a sleeve; stirring rods are fixedly connected to the rotating shaft and the sleeve in the circumferential direction; a transmission assembly for driving the sleeve and the rotating shaft to rotate reversely is arranged on the rotating shaft; the controller is used for controlling the driving part to operate and driving the spraying assembly, the granulating assembly and the purging assembly to operate at the same time. The preparation cost can be reduced, and the preparation efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer preparation, and particularly to a preparation device for ammoniated water-soluble granular compound fertilizer. Background Art

[0002] Modern agriculture requires fertilizers that are efficient and environmentally friendly. Water-soluble fertilizers are favored because of their easy absorption and high utilization rate. In the process of fertilizer preparation, through ammoniation reaction, resources such as low-grade phosphate rock can be utilized, improving resource utilization rate while reducing environmental pollution. The preparation process of ammoniated water-soluble granular compound fertilizer generally includes the following steps: stirring of raw materials, spraying of ammoniating agent, granulation of semi-finished products, and drying of finished products.

[0003] The preparation devices in the prior art usually consist of a stirring device, a spraying device, a granulation device, and a drying device, so as to successively stir the raw materials, spray the ammoniating agent, granulate the semi-finished products, and dry the finished products. However, in the prior art, multiple different devices are required to complete the preparation of ammoniated water-soluble granular compound fertilizer, resulting in a relatively high preparation cost.

[0004] In summary, how to solve the problem in the prior art that multiple different devices are required to complete the preparation of ammoniated water-soluble granular compound fertilizer, resulting in a relatively high preparation cost, has become a difficult problem that urgently needs to be solved in the current field. Therefore, it is necessary to propose a more reasonable preparation device for ammoniated water-soluble granular compound fertilizer. Summary of the Invention

[0005] To solve the above problems, the present invention provides a preparation device for ammoniated water-soluble granular compound fertilizer. Through the design of a stirring component, a spraying component, a granulation component, and a purging component, multiple steps such as stirring of raw materials, spraying of ammoniating agent, granulation of semi-finished products, and drying of finished products are integrated into the same device, reducing the preparation cost and eliminating the need for repeated transmission of raw materials, thus greatly improving the preparation efficiency.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A preparation device for ammoniated water-soluble granular compound fertilizer, comprising a stirring tank, and a feeding port for adding raw materials is opened on the side wall of the stirring tank; a liquid storage tank for storing ammoniating agent is fixedly connected to the side wall of the stirring tank, and a stirring component for stirring raw materials, a spraying component for spraying ammoniating agent, a granulation component for extruding raw materials into particles, and a purging component for drying and cooling the particles are arranged in the stirring tank.

[0007] The stirring assembly includes a controller and a driving member fixedly connected to the inner top wall of the stirring tank. The output shaft of the driving member is coaxially and fixedly connected with a rotating shaft, and a sleeve is rotatably sleeved on the rotating shaft; stirring rods are circumferentially and fixedly connected to both the rotating shaft and the sleeve; a transmission assembly is provided on the rotating shaft for driving the sleeve to rotate in the opposite direction to the rotating shaft; the controller is used to control the operation of the driving member, thereby driving the rotation of the rotating shaft and simultaneously driving the operation of the spraying assembly, the granulating assembly, and the purging assembly.

[0008] The technical principle of the above solution is as follows: Raw materials are added into the stirring tank through the feeding port, and then the driving member is started through the controller. The output shaft of the driving member will drive the rotating shaft and the stirring rods on the rotating shaft to rotate, thereby stirring the raw materials; at the same time, the transmission assembly will drive the sleeve and the stirring rods on the sleeve to rotate, so that the upper and lower layers of stirring rods stir the raw materials simultaneously; and the transmission assembly will make the sleeve rotate in the opposite direction to the rotating shaft, so that the upper and lower layers of stirring rods rotate in the opposite direction, causing the upper and lower layers of stirring rods to generate a reverse acting force on the raw materials while stirring the raw materials, thereby shearing the raw materials.

[0009] At the same time, the driving member will also drive the spraying assembly, the granulating assembly, and the purging assembly to operate, thereby preparing the finished product.

[0010] The following are the beneficial effects of adopting the above solution: 1. In the prior art, the preparation of ammoniated water-soluble granular compound fertilizer needs to be completed step by step in sequence by multiple independent devices such as a mixer, a slurry spraying machine, a granulator, and a dryer, resulting in a complex preparation process; in the present invention, multiple steps such as stirring of raw materials, spraying of ammoniating agent, granulation of semi-finished products, and drying of finished products are integrated and carried out regularly and orderly in the same device, greatly reducing the preparation difficulty of ammoniated water-soluble granular compound fertilizer, enabling operators to prepare ammoniated water-soluble granular compound fertilizer more quickly and conveniently, improving the preparation efficiency, reducing the cost and time of personnel training, and also reducing the risk of incorrect operations caused by chaotic steps of operators.

[0011] 2. In the prior art, due to the large number of preparation devices, operators need to transfer raw materials multiple times or use a transmission device, which greatly reduces the preparation efficiency, and raw materials may be spilled during the transfer process, affecting the preparation quantity, or other impurities may be mixed in, affecting the preparation quality. In the present invention, each preparation step is integrated into one device, eliminating the need to transfer raw materials repeatedly, avoiding the risk of raw material spillage or impurity mixing, and improving the raw material utilization rate and the quality of the finished product.

[0012] 3. During the ammoniation process, the raw materials will be transformed into viscous colloids. In the stirring devices of the prior art, usually only unidirectional stirring can be carried out. During the stirring process, the raw materials stick to each other, and at the same time, the raw materials also stick to the stirring rod, resulting in most of the raw materials rotating together with the stirring rod, thus greatly affecting the stirring effect. By making the upper and lower layers of stirring rods rotate in opposite directions, the present invention can generate opposite forces on the raw materials while stirring the raw materials, thereby shearing the raw materials, separating the raw materials from each other, preventing most of the raw materials from rotating together with the raw materials sticking to the stirring rod, and further optimizing the stirring effect. At the same time, the upper and lower layers of stirring rods can effectively increase the stirring range and further optimize the stirring effect.

[0013] Furthermore, the transmission component includes a first bevel gear fixedly connected coaxially on the rotating shaft; a second bevel gear is fixedly connected coaxially at the top of the sleeve; a horizontal shaft is rotatably fitted on the side wall of the stirring tank, and a third bevel gear is fixedly connected to the end of the horizontal shaft located inside the stirring tank; both the first bevel gear and the second bevel gear are engaged with the third bevel gear; the first bevel gear and the second bevel gear are respectively located on the upper and lower sides of the third bevel gear.

[0014] Beneficial effects: When the driving member drives the rotating shaft to rotate, the first bevel gear will also rotate accordingly; the first bevel gear will drive the third bevel gear to rotate, and the third bevel gear will drive the second bevel gear to rotate; since the first bevel gear and the second bevel gear are respectively located on the upper and lower sides of the third bevel gear, therefore, the rotation directions of the first bevel gear and the second bevel gear are opposite, so that the sleeve and its stirring rod and the rotating shaft and its stirring rod rotate in opposite directions, and then the raw materials are stirred and sheared.

[0015] Furthermore, the granulation component includes an extrusion plate and a material receiving plate fixedly connected to the inner side wall of the stirring tank; a plurality of arc-shaped grooves are opened at the bottom of the extrusion plate and the top of the material receiving plate; a plurality of conical holes are opened at the top of the extrusion plate, and the conical holes are all communicated with the adjacent arc-shaped grooves; sliding grooves for the vertical sliding of the extrusion plate are symmetrically opened on the side wall of the stirring tank; a tension spring is fixedly connected to the top wall of each sliding groove, and the bottom of the tension spring is fixedly connected to the top of the extrusion plate; a sliding component is provided on the extrusion plate for driving the vertical sliding of the extrusion plate.

[0016] Beneficial effects: When the raw materials are mixed, the raw materials will flow into the arc-shaped grooves of the material receiving plate through the conical holes at the top of the extrusion plate. When the extrusion plate is moved downward by using the sliding component, the arc-shaped grooves on the extrusion plate and the arc-shaped grooves on the material receiving plate are mutually fitted, and then the raw materials are extruded into spherical particles; and the extrusion plate will continuously slide up and down under the action of the sliding component and the tension spring, and then continuously oscillate the raw materials at the top of the extrusion plate, improving the uniformity of the raw materials. At the same time, through vibration, the accumulation of raw materials in the conical holes is avoided, and the flow rate of the raw materials is accelerated; the material receiving plate continuously receives the raw materials, so that each arc-shaped groove can be completely filled, and the extrusion plate continuously extrudes, making the raw materials more compact and better forming spherical particles.

[0017] Furthermore, a shielding rod for shielding the sliding groove is symmetrically and fixedly connected to the top of the extrusion plate.

[0018] Beneficial effects: The shielding rod can prevent raw materials from flowing into the area where the tension spring is located, causing blockage and affecting the normal operation of the tension spring.

[0019] Furthermore, the sliding assembly includes a cam fixedly connected coaxially with the horizontal shaft, and the cam is located outside the mixing tank; a cross bar is vertically slidably fitted on the side wall of the mixing tank, and the bottom of the cam is rotatably fitted with the cross bar; the cross bar penetrates through the mixing tank, and the part of the cross bar located inside the mixing tank is fixedly connected to the top end of the adjacent shielding rod.

[0020] Beneficial effects: When the driving member is started, the horizontal shaft rotates together with the third bevel gear, thereby driving the cam to rotate. When the convex side of the cam approaches the cross bar, the cross bar and the shielding rod will move downward. At this time, the shielding rod will push the extrusion plate downward, and at this time, the tension spring is stretched; when the convex side of the cam moves away from the cross bar, since the cross bar loses the limit of the cam, the tension spring will pull the extrusion plate back upward, and the cross bar and the shielding rod will also move upward.

[0021] Furthermore, the spraying assembly includes a piston plate vertically slidably fitted on the inner side wall of the liquid storage tank. The top of the piston plate is fixedly connected with a piston rod, and the top of the piston rod extends outside the liquid storage tank and is fixedly connected to the bottom of the cross bar; a drain pipe is connected to the bottom of the liquid storage tank, and a first control valve is connected at the connection between the two; the controller is used to control the operation of the first control valve; a plurality of drain holes are opened on the inner side wall of the mixing tank, and the drain holes are all connected to the drain pipe.

[0022] Beneficial effects: When it is necessary to add the ammoniating agent, the first control valve is opened through the controller; when the cross bar moves downward, the piston plate will also move downward, thereby pumping the ammoniating agent in the liquid storage tank through the drain pipe from the drain holes, so as to spray the ammoniating agent on the raw materials and assist the raw materials to quickly form particles.

[0023] Furthermore, the purging assembly includes fan blades fixedly connected circumferentially to one end of the horizontal shaft away from the third bevel gear; a wind box is fixedly connected to the top of the liquid storage tank, and an air inlet is opened on the side wall of the wind box; the fan blades are all located inside the wind box; a ventilation pipe is connected to the side wall of the wind box, and a second control valve is connected at the connection between the two; the controller is used to control the operation of the second control valve; a plurality of ventilation holes are opened on the inner side wall of the mixing tank, and the ventilation holes are all connected to the ventilation pipe; a temperature control assembly for adjusting the air flow temperature is provided in the ventilation pipe.

[0024] Beneficial effects: When the horizontal axis rotates, the fan blades will also rotate accordingly, thereby generating a certain amount of air flow; when the raw materials need to be dried, the second control valve is opened through the controller, so that the air flow passes through the ventilation pipe, and at the same time, the air flow is heated through the temperature control component, and then the raw materials are dried through the ventilation holes; after drying, heating the air flow is stopped, and the second control valve is kept open to make the air flow continue to flow, so that the raw materials can be cooled.

[0025] Furthermore, a number of convex rods are fixedly connected to the inner walls of the arc-shaped grooves.

[0026] Beneficial effects: When using the arc-shaped grooves on the extrusion plate and the material receiving plate to extrude the raw materials, the convex rods will also extrude the raw materials, so that there are a number of concave holes on the surface of the prepared finished product, making the finished product form a porous structure, improving the nutrient release efficiency of the chemical fertilizer, and enhancing the water solubility and diffusion uniformity of the chemical fertilizer.

[0027] Furthermore, a number of scraping plates are coaxially and fixedly connected to the lower end of the rotating shaft.

[0028] Beneficial effects: When the top of the extrusion plate contacts the scraping plate, the scraping plate will push the raw materials on the top of the extrusion plate into the conical holes, further assisting the raw materials to flow into the material receiving plate and improving the utilization rate and processing efficiency of the raw materials.

[0029] Furthermore, the temperature control component includes a number of heating wires fixedly connected in the ventilation pipe, and the controller is used to control the heating temperature of the heating wires, so as to heat the air flow in the ventilation pipe.

[0030] Beneficial effects: When drying, the heating wires are started through the controller to heat the air flow.

[0031] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0032] Figure 1 It is a side sectional view of the preparation device for ammoniated water-soluble granular compound fertilizer of the present invention.

[0033] Figure 2 It is an axonometric view of the stirring component in the preparation device for ammoniated water-soluble granular compound fertilizer of the present invention.

[0034] Figure 3 It is a side sectional view of the granulation component in the preparation device for ammoniated water-soluble granular compound fertilizer of the present invention.

[0035] Figure 4 It is a side sectional view of the spraying component and the purging component in the preparation device for ammoniated water-soluble granular compound fertilizer of the present invention.

[0036] The reference numerals in the accompanying drawings of the specification include: 1, stirring tank; 2, liquid storage tank; 3, reduction motor; 4, rotating shaft; 5, sleeve; 6, stirring rod; 7, first bevel gear; 8, second bevel gear; 9, horizontal shaft; 10, third bevel gear; 11, extrusion plate; 12, material receiving plate; 13, tension spring; 14, blocking rod; 15, cam; 16, cross bar; 17, piston plate; 18, piston rod; 19, liquid discharge pipe; 20, first control valve; 21, liquid discharge hole; 22, fan blade; 23, air box; 24, ventilation pipe; 25, second control valve; 26, ventilation hole; 27, convex rod; 28, scraping plate; 29, partition plate. Detailed implementation manners

[0037] The following is a further detailed description through specific implementation manners: Embodiment 1:

[0038] As shown in the Figures 1 - 4 accompanying drawings: A preparation device for ammoniated water-soluble granular compound fertilizer includes a stirring tank 1, and a feeding port for adding raw materials is opened on the side wall of the stirring tank 1; a liquid storage tank 2 for storing ammoniating agent is welded on the side wall of the stirring tank 1, and a stirring assembly for stirring raw materials, a spraying assembly for spraying ammoniating agent, a granulation assembly for extruding raw materials into particles, and a purging assembly for drying and cooling the particles are arranged in the stirring tank 1.

[0039] As Figure 1 shown in Figure 2 the accompanying drawings, the stirring assembly includes a controller and a driving member bolted and fixed to the inner top wall of the stirring tank 1. In this embodiment, the driving member is a reduction motor 3; the output shaft of the reduction motor 3 is coaxially bolted and fixed to a rotating shaft 4, and a sleeve 5 is rotatably sleeved on the rotating shaft 4; stirring rods 6 are circumferentially bolted and fixed to both the rotating shaft 4 and the sleeve 5; a plurality of scraping plates 28 are coaxially bolted and fixed to the lower end of the rotating shaft 4. A transmission assembly is provided on the rotating shaft 4 for driving the sleeve 5 to rotate in the opposite direction to the rotating shaft 4; the controller is used to control the operation of the reduction motor 3, thereby driving the rotation of the rotating shaft 4 and simultaneously driving the operation of the spraying assembly, the granulation assembly, and the purging assembly.

[0040] As Figure 1 shown in Figure 2 the accompanying drawings, the transmission assembly includes a first bevel gear 7 coaxially bolted and fixed to the rotating shaft 4; a second bevel gear 8 is coaxially bolted and fixed to the top end of the sleeve 5; a horizontal shaft 9 is rotatably fitted on the side wall of the stirring tank 1, and a third bevel gear 10 is bolted and fixed to one end of the horizontal shaft 9 located inside the stirring tank 1; both the first bevel gear 7 and the second bevel gear 8 are meshed with the third bevel gear 10; the first bevel gear 7 and the second bevel gear 8 are respectively located on the upper and lower sides of the third bevel gear 10.

[0041] As Figure 3As shown in the figure, the granulation assembly includes an extrusion plate 11 and a material receiving plate 12 bolted and fixed to the inner side wall of the mixing tank 1; a number of arc-shaped grooves are provided at the bottom of the extrusion plate 11 and the top of the material receiving plate 12; a number of tapered holes are provided at the top of the extrusion plate 11, and the tapered holes are all communicated with the adjacent arc-shaped grooves; sliding grooves for the vertical sliding of the extrusion plate 11 are symmetrically provided on the side wall of the mixing tank 1; tension springs 13 are fixedly connected to the top inner walls of the sliding grooves by screws, and the bottoms of the tension springs 13 are fixedly connected to the top of the extrusion plate 11 by screws; a sliding assembly is provided on the extrusion plate 11 for driving the vertical sliding of the extrusion plate 11.

[0042] As Figure 1 shown in the figure, a shielding rod 14 for shielding the sliding groove is symmetrically bolted and fixed to the top of the extrusion plate 11. The sliding assembly includes a cam 15 bolted and fixed coaxially with the horizontal shaft 9, and the cam 15 is located outside the mixing tank 1; a cross bar 16 is vertically slidably fitted on the side wall of the mixing tank 1, and the bottom of the cam 15 is rotatably fitted with the cross bar 16; the cross bar 16 penetrates through the mixing tank 1, and the part of the cross bar 16 located inside the mixing tank 1 is bolted and fixed to the top end of the adjacent shielding rod 14.

[0043] As Figure 1 and Figure 4 shown in the figure, the spraying assembly includes a piston plate 17 vertically slidably fitted on the inner side wall of the liquid storage tank 2, a piston rod 18 is bolted and fixed to the top of the piston plate 17, and the top of the piston rod 18 extends outside the liquid storage tank 2 and is bolted and fixed to the bottom of the cross bar 16; a drain pipe 19 is communicated with the bottom of the liquid storage tank 2, and a first control valve 20 is communicated at the connection of the two, and the controller is used to control the operation of the first control valve 20; a number of drain holes 21 are provided on the inner side wall of the mixing tank 1, and the drain holes 21 are all communicated with the drain pipe 19.

[0044] As Figure 1 and Figure 4 shown in the figure, the purging assembly includes fan blades 22 bolted and fixed circumferentially to the right end of the horizontal shaft 9; a wind box 23 is bolted and fixed to the top of the liquid storage tank 2, and an air inlet is provided on the side wall of the wind box 23 to ensure the circulation of the gas in the wind box 23; the fan blades 22 are all located inside the wind box 23; a ventilation pipe 24 is communicated with the side wall of the wind box 23, and a second control valve 25 is communicated at the connection of the two; the controller is used to control the operation of the second control valve 25; a number of ventilation holes 26 are provided on the inner side wall of the mixing tank 1, and the ventilation holes 26 are all communicated with the ventilation pipe 24; a temperature control assembly for adjusting the temperature of the air flow is provided in the ventilation pipe 24.

[0045] The temperature control assembly includes a number of heating wires (not shown in the figure) bolted and fixed in the ventilation pipe 24, and the controller is used to control the heating temperature of the heating wires, so as to heat the air flow in the ventilation pipe 24.

[0046] As Figure 1As shown in the figure, in this embodiment, a partition plate 29 for protecting each component is welded to the inner side wall of the mixing tank 1, and the shielding rods 14 are all vertically slidably engaged with the partition plate 29; the partition plate 29 can prevent the raw materials from splashing during the mixing process and ensure the normal operation of each component.

[0047] The specific implementation process is as follows: Take Figure 1 as an example. A certain amount of water and raw materials are added into the mixing tank 1 through the feeding port, and then the reduction motor 3 is started through the controller. The output shaft of the reduction motor 3 will drive the rotating shaft 4 and the stirring rods 6 on the rotating shaft 4 to rotate, thereby mixing the raw materials; at the same time, the first bevel gear 7 will also rotate accordingly; since both the first bevel gear 7 and the second bevel gear 8 are engaged with the third bevel gear 10, therefore, the first bevel gear 7 will drive the third bevel gear 10 to rotate, and the third bevel gear 10 will drive the second bevel gear 8 to rotate; and because the first bevel gear 7 and the second bevel gear 8 are respectively located on the upper and lower sides of the third bevel gear 10, therefore, the rotation directions of the first bevel gear 7 and the second bevel gear 8 are opposite, so that the sleeve 5 and its stirring rods 6 and the rotating shaft 4 and its stirring rods 6 all rotate in the reverse direction, thereby mixing and shearing the raw materials.

[0048] During this process, the stirring rods 6 will mix the raw materials and water, converting the raw materials into viscous colloids. When the upper and lower layers of stirring rods 6 rotate in the reverse direction, opposite forces can be generated on the raw materials, thereby shearing the raw materials and separating the raw materials from each other, preventing most of the raw materials from rotating together with the raw materials sticking to the stirring rods 6, and thus optimizing the mixing effect. The shielding rods 14 can prevent the raw materials from flowing into the area where the tension springs 13 are located and causing blockage, affecting the normal operation of the tension springs 13 in the subsequent process.

[0049] Take Figure 1 and Figure 3 as an example. When the raw material mixing is completed, the raw materials will flow into the arc-shaped groove of the receiving plate 12 through the conical hole at the top of the pressing plate 11; when the horizontal shaft 9 rotates together with the third bevel gear 10, it will drive the cam 15 to rotate. When the protruding side of the cam 15 approaches the cross bar 16, the cross bar 16 and the shielding rods 14 will move downward. At this time, the shielding rods 14 will push the pressing plate 11 downward, and the arc-shaped groove on the pressing plate 11 and the arc-shaped groove on the receiving plate 12 will fit together, thereby pressing the raw materials into spherical particles; when the protruding side of the cam 15 moves away from the cross bar 16, since the cross bar 16 loses the limit of the cam 15, the tension spring 13 will pull the pressing plate 11 back upward, and the cross bar 16 and the shielding rods 14 will also move upward. In this embodiment, wear-resistant coatings (such as tungsten carbide coatings, plasma-sprayed chromium oxide and polytetrafluoroethylene composite coatings, and tungsten carbide coatings are selected in this embodiment) are applied to the surfaces of the cam 15 and the cross bar 16.

[0050] The extrusion plate 11 will slide up and down continuously under the action of the cam 15 and the tension spring 13, thereby continuously oscillating the raw materials at the top of the extrusion plate 11, improving the uniformity of the raw materials. At the same time, through vibration, the accumulation of raw materials in the conical holes is avoided, and the flow rate of the raw materials is accelerated; the receiving plate 12 continuously receives the raw materials, so that each arc-shaped groove can be completely filled. The extrusion plate 11 continuously extrudes, making the raw materials more compact and better forming spherical particles.

[0051] Taking Figure 1 and Figure 4 as an example, during the granulation of raw materials, the operator can open the first control valve 20 through the controller; during the up and down movement of the cross bar 16, the piston plate 17 will also slide up and down in the liquid storage tank 2, thereby continuously pumping the ammoniating agent in the liquid storage tank 2 through the drain pipe 19 from the drain hole 21, so as to spray the ammoniating agent on the raw materials and assist the raw materials to quickly form particles.

[0052] Taking Figure 1 and Figure 4 as an example, when the horizontal axis 9 rotates, the fan blades 22 will also rotate accordingly, thereby generating a certain air flow; when the raw materials need to be dried after granulation, the operator can open the second control valve 25 through the controller, so that the air passes through the ventilation pipe 24. At the same time, the heating wire is started through the controller to heat the air flow, and the air flow dries the raw materials through the ventilation holes 26; after drying, the heating wire is turned off through the controller to stop heating the air flow, and the second control valve 25 is kept open, so that the air flow continuously purges the raw materials, and the raw materials can be cooled to obtain the cooled finished products; a material taking port is opened on the lower side wall of the stirring tank 1, and the receiving plate 12 is in transverse sliding fit with the material taking port. Whenever a batch of finished products is made, the operator can take out the receiving plate 12 from the material taking port to obtain the raw materials; in this embodiment, the amount of raw materials added each time matches the amount of finished products that the receiving plate 12 can load.

[0053] In this embodiment, by integrating multiple steps such as stirring of raw materials, spraying of ammoniating agent, granulation of semi-finished products, and drying of finished products, and carrying out these steps regularly and orderly in the same equipment, the preparation difficulty of ammoniated water-soluble granular compound fertilizer is greatly reduced, enabling the operator to prepare ammoniated water-soluble granular compound fertilizer more quickly and conveniently, improving the preparation efficiency, reducing the cost and time of personnel training, and also reducing the risk of incorrect operation caused by the operator due to chaotic steps; at the same time, there is no need for the operator to transfer raw materials repeatedly, avoiding the risk of raw material spillage or impurity mixing, and improving the raw material utilization rate and the quality of finished products. Embodiment 2:

[0054] As shown in the appendix Figure 3 different from the above embodiment, a number of convex rods 27 are welded on the inner walls of the arc-shaped grooves.

[0055] The specific implementation process is as follows: When extruding raw materials using the arc grooves on the extrusion plate 11 and the material receiving plate 12, the convex rod 27 will also extrude the raw materials, resulting in several concave holes on the surface of the prepared finished product, making the finished product form a porous structure, improving the nutrient release efficiency of the fertilizer, and enhancing the water solubility and diffusion uniformity of the fertilizer.

[0056] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. An apparatus for preparing an ammoniated water-soluble granular compound fertilizer, comprising a stirring tank (1), and a feeding port for adding raw materials is formed on the side wall of the stirring tank (1); a liquid storage tank (2) for storing an ammoniating agent is fixedly connected to the side wall of the stirring tank (1), characterized in that, Inside the mixing tank (1), there are a mixing assembly for mixing raw materials, a spraying assembly for spraying ammoniating agent, a granulating assembly for extruding the raw materials into particles, and a purging assembly for drying and cooling the particles. The mixing assembly includes a controller and a driving member fixedly connected to the inner top wall of the mixing tank (1). The output shaft of the driving member is coaxially and fixedly connected with a rotating shaft (4). A sleeve (5) is rotatably sleeved on the rotating shaft (4). Stirring rods (6) are circumferentially and fixedly connected to both the rotating shaft (4) and the sleeve (5). A transmission assembly is provided on the rotating shaft (4) for driving the sleeve (5) to rotate in the opposite direction to the rotating shaft (4). The controller is used to control the operation of the driving member, thereby driving the rotation of the rotating shaft (4) and simultaneously driving the operation of the spraying assembly, the granulating assembly, and the purging assembly.

2. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 1, wherein, The transmission assembly includes a first bevel gear (7) coaxially and fixedly connected to the rotating shaft (4); a second bevel gear (8) is coaxially and fixedly connected to the top end of the sleeve (5); a horizontal shaft (9) is rotatably fitted to the side wall of the mixing tank (1). One end of the horizontal shaft (9) located inside the mixing tank (1) is fixedly connected with a third bevel gear (10); both the first bevel gear (7) and the second bevel gear (8) are engaged with the third bevel gear (10); the first bevel gear (7) and the second bevel gear (8) are respectively located on the upper and lower sides of the third bevel gear (10).

3. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 2, wherein, The granulating assembly includes an extrusion plate (11) and a material receiving plate (12) fixedly connected to the inner side wall of the mixing tank (1); a plurality of arc-shaped grooves are formed at the bottom of the extrusion plate (11) and the top of the material receiving plate (12); a plurality of tapered holes are formed at the top of the extrusion plate (11), and the tapered holes are all communicated with the adjacent arc-shaped grooves; sliding grooves for the vertical sliding of the extrusion plate (11) are symmetrically formed on the side wall of the mixing tank (1); a tension spring (13) is fixedly connected to the inner top wall of each sliding groove, and the bottom of the tension spring (13) is fixedly connected to the top of the extrusion plate (11); a sliding assembly is provided on the extrusion plate (11) for driving the vertical sliding of the extrusion plate (11).

4. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 3, wherein, Blocking rods (14) for blocking the sliding grooves are symmetrically and fixedly connected to the top of the extrusion plate (11).

5. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 4, characterized in that, The sliding assembly includes a cam (15) coaxially and fixedly connected to the horizontal shaft (9). The cam (15) is located outside the mixing tank (1); a cross bar (16) is vertically slidably fitted to the side wall of the mixing tank (1). The bottom of the cam (15) is rotatably fitted to the cross bar (16); the cross bar (16) penetrates through the mixing tank (1), and the part of the cross bar (16) located inside the mixing tank (1) is fixedly connected to the top end of the adjacent blocking rod (14).

6. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 5, characterized in that, The spraying assembly includes a piston plate (17) vertically slidably fitted to the inner side wall of the liquid storage tank (2). A piston rod (18) is fixedly connected to the top of the piston plate (17). The top of the piston rod (18) extends outside the liquid storage tank (2) and is fixedly connected to the bottom of the cross bar (16); a drain pipe (19) is communicated with the bottom of the liquid storage tank (2), and a first control valve (20) is communicated at the connection between the two. The controller is used to control the operation of the first control valve (20); a plurality of drain holes (21) are formed on the inner side wall of the mixing tank (1), and the drain holes (21) are all communicated with the drain pipe (19).

7. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 6, characterized in that, The purging assembly includes fan blades (22) fixedly connected circumferentially to one end of the horizontal shaft (9) away from the third bevel gear (10); a wind box (23) is fixedly connected to the top of the liquid storage tank (2), and an air inlet is formed in the side wall of the wind box (23); the fan blades (22) are all located inside the wind box (23); a ventilation pipe (24) is communicated with the side wall of the wind box (23), and a second control valve (25) is communicated at the connection of the two; the controller is used to control the operation of the second control valve (25); a plurality of ventilation holes (26) are formed in the inner side wall of the mixing tank (1), and the ventilation holes (26) are all communicated with the ventilation pipe (24); a temperature control assembly for adjusting the temperature of the air flow is arranged in the ventilation pipe (24).

8. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 7, characterized in that, A plurality of convex rods (27) are fixedly connected to the inner walls of the arc-shaped grooves.

9. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 8, characterized in that, A plurality of scraping plates (28) are coaxially and fixedly connected to the lower end of the rotating shaft (4).

10. The preparation device of the ammoniated water-soluble granular compound fertilizer according to claim 9, characterized in that, The temperature control assembly includes a plurality of heating wires fixedly connected in the ventilation pipe (24), and the controller is used to control the heating temperature of the heating wires, so as to heat the air flow in the ventilation pipe (24).

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