Compound fertilizer raw material crushing and mixing equipment

Abstract

The invention discloses compound fertilizer raw material crushing and mixing equipment which comprises a crushing and mixing box, two transmission mechanisms, a screening net belt, two crushing assemblies and a mixing mechanism, two first crushing shafts are rotationally connected to the interior of the crushing and mixing box, and crushing cutter sets are arranged on the first crushing shafts; the two transmission mechanisms are oppositely arranged on the two sides of the crushing cutter set correspondingly, each transmission mechanism comprises two driving wheel sets, three driven wheel sets and a toothed chain, and the two driving wheel sets are connected with the corresponding first crushing shafts correspondingly; the two driving wheel sets and the three driven wheel sets are in transmission connection through tooth chains. The two ends of the screening net belt are connected with the corresponding toothed chains correspondingly. And the mixing mechanism is rotationally arranged below the screening mesh belt. Therefore, an integrated crushing-mixing integrated treatment system is adopted, raw material particle size regulation and control and component homogenization are synchronously completed, and raw material in-situ treatment is realized, so that the equipment conversion time is saved, the processing steps are simplified, and the production efficiency of the compound fertilizer is improved.

Description

Technical Field

[0001] The present application relates to the technical field of compound fertilizers, and in particular to a compound fertilizer raw material crushing and mixing device. Background Art

[0002] Compound fertilizers are multi-element chemical fertilizers, primarily based on the three essential elements nitrogen (N), phosphorus (P), and potassium (K), formulated with a variety of nutrients in a scientifically formulated ratio. By precisely controlling the ratios of different nutrients, they effectively meet the differentiated needs of crops throughout their growth cycle, and have become an indispensable and efficient form of nutrient supply in modern agriculture.

[0003] In industrial production, compound fertilizer preparation typically involves two key steps: raw material pretreatment and homogenous mixing. During production, potassium sources such as nitric acid, urea (nitrogen source), ammonium phosphate (phosphorus source), and potassium chloride are first crushed. Once the particle size is uniform, they are precisely mixed using specialized equipment such as a twin-shaft mixer. However, the current process has certain shortcomings: the crushing and mixing steps must be completed in separate equipment, and the crushed raw materials must be transferred to the mixing equipment. This results in a cumbersome process and time-consuming equipment conversion, directly impacting overall production efficiency. Summary of the Invention

[0004] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, one purpose of this application is to propose a compound fertilizer raw material crushing and mixing equipment, which adopts an integrated crushing-mixing integrated processing system to simultaneously complete the raw material particle size control and component homogenization, realize in-situ processing of raw materials, thereby saving equipment conversion time, simplifying processing steps, and improving the production efficiency of compound fertilizer.

[0006] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a compound fertilizer raw material crushing and mixing equipment, including a crushing and mixing box, two transmission mechanisms, a screening mesh belt, two crushing components and a mixing mechanism, wherein the top of the crushing and mixing box is connected to two feed hoppers, and each of the feed hoppers is provided with a feeding component; the crushing and mixing box is internally rotatably connected to two first crushing shafts, and the first crushing shafts are provided with a crushing knife group; the two transmission mechanisms are respectively arranged on both sides of the crushing knife group, and the transmission mechanism includes two driving wheel groups, three driven wheel groups and a tooth chain, wherein the two driving wheel groups are connected to the crushing and mixing box, and the two driven wheel groups are connected to the crushing and mixing box. The driven wheel groups are respectively connected to the corresponding first crushing shafts; the three driven wheel groups are respectively rotatably arranged in the crushing and mixing box, and the two driving wheel groups and the three driven wheel groups are connected by the tooth chain transmission; the two ends of the screening mesh belt are respectively connected to the corresponding tooth chains, and the screening mesh belt has a "W" shape structure; the two crushing assemblies are respectively arranged in the two grooves of the screening mesh belt, and the crushing assemblies are connected to the driven wheel groups; the mixing mechanism is rotatably arranged below the screening mesh belt; a discharge port is provided at the bottom of the crushing and mixing box, and a discharge assembly is provided at the discharge port.

[0007] In addition, the compound fertilizer raw material crushing and mixing equipment proposed in the present application may also have the following additional technical features: In one embodiment of the present application, the driving wheel group includes an incomplete gear, a complete gear, a driving shaft and a first sprocket, wherein the driving shaft is rotatably arranged on the inner wall of the crushing and mixing box; the incomplete gear and the complete gear are respectively arranged on the first crushing shaft and the driving shaft, and there is a meshing relationship between the incomplete gear and the complete gear; the first sprocket is arranged on the driving shaft.

[0008] In one embodiment of the present application, the driven wheel set includes a driven shaft and a second sprocket, wherein: The driven shaft is rotatably arranged on the inner side wall of the pulverizing and mixing box; the second sprocket is arranged on the driven shaft, and the second sprocket and the first sprocket are respectively engaged with the tooth chain.

[0009] In one embodiment of the present application, the crushing assembly includes a second crushing shaft and a plurality of second crushing knives, wherein both ends of the second crushing shaft are respectively connected to the corresponding driven shaft; and the plurality of second crushing knives are evenly distributed on the second crushing shaft.

[0010] In one embodiment of the present application, the mixing mechanism includes a central shaft, multiple dispersion components and multiple spiral stirring blades, wherein the central shaft is rotatably arranged below the screening mesh belt; multiple dispersion components are arranged in a ring array around the central shaft; multiple spiral stirring blades are respectively connected to the central shaft through a first connecting rod, and the spiral stirring blades are arranged in the space formed by multiple dispersion components.

[0011] In one embodiment of the present application, the dispersion assembly includes a shovel plate, two groups of second connecting rods and multiple dispersion blades, wherein the two groups of second connecting rods are symmetrically arranged on the central axis; the shovel plate is connected to the second connecting rod; the multiple dispersion blades are evenly distributed on the arc-shaped concave surface of the shovel plate, and the dispersion blades are arranged at an angle.

[0012] In one embodiment of the present application, the feeding assembly includes a rotating shaft and a plurality of feeding plates, wherein the rotating shaft is rotatably disposed in the feed hopper; and the plurality of feeding plates are evenly distributed on the rotating shaft.

[0013] In one embodiment of the present application, the discharge assembly includes a flip shaft, multiple connecting plates and a sealing plate, wherein the flip shaft is rotatably arranged below the crushing mixing box; the multiple connecting plates are respectively arranged on the flip shaft, and the connecting plates are connected to the sealing plate.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: (1) When the first crushing shaft rotates, under the coordinated action of the transmission mechanism, it drives the screening belt to move back and forth, thereby improving the screening efficiency and ensuring the uniformity of the raw material particle size. At the same time, it can also synchronously drive the crushing assembly to rotate, and implement secondary crushing of large particles of raw materials retained in the grooves of the screening belt, with significant crushing effect; (2) The “W”-shaped screening belt can effectively disperse the raw materials, and its large surface area significantly improves the screening efficiency; (3) The mixing mechanism can achieve axial propulsion and radial stirring, ensuring that the material flows fully in the crushing and mixing box. At the same time, it can also disperse the raw materials, thereby improving the uniformity of mixing multiple raw materials.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1This is a schematic diagram of the internal structure of a crushing and mixing box in a compound fertilizer raw material crushing and mixing device according to one embodiment of the present application; Figure 2 This is a schematic diagram of the external structure of a compound fertilizer raw material crushing and mixing device according to one embodiment of the present application; Figure 3 This is a cross-sectional view of the structure of a compound fertilizer raw material crushing and mixing equipment according to one embodiment of the present application. Figure 1 ; Figure 4 This is a schematic structural diagram of a screening mesh belt in a compound fertilizer raw material crushing and mixing device according to one embodiment of the present application; Figure 5 This is a schematic structural diagram of a mixing mechanism in a compound fertilizer raw material crushing and mixing device according to one embodiment of the present application; Figure 6 This is a schematic structural diagram of a dispersing component in a compound fertilizer raw material crushing and mixing device according to one embodiment of the present application; Figure 7 This is a cross-sectional view of a compound fertilizer raw material crushing and mixing device according to an embodiment of the present application. Figure 2 .

[0017] As shown in the figure: 1. Crushing and mixing box; 2. Transmission mechanism; 3. Screening belt; 4. Crushing assembly; 5. Mixing mechanism; 6. Discharge assembly; 9. Feeding assembly; 10. Feed hopper; 11. First crushing shaft; 12. First crushing knife; 13. Discharge port; 21. Driving wheel group; 22. Driven wheel group; 23. Tooth chain; 211. Incomplete gear; 212. Complete gear; 213. Driving shaft; 214. First sprocket; 221. Driven shaft; 222. Second sprocket; 41. Second crushing shaft; 42. Second crushing knife; 51. Center shaft; 52. Dispersing assembly; 53. Spiral stirring blade; 521. Shovel plate; 522. Second connecting rod; 523. Dispersing blade; 61. Turning shaft; 62. Connecting plate; 63. Sealing plate; 91. Rotating shaft; 92. Feeding plate. DETAILED DESCRIPTION

[0018] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0019] The following describes the compound fertilizer raw material crushing and mixing equipment according to the embodiment of the present application with reference to the accompanying drawings.

[0020] like Figures 1 to 7 As shown, the compound fertilizer raw material crushing and mixing equipment of the embodiment of the present application may include a crushing and mixing box 1, two transmission mechanisms 2, a screening mesh belt 3, two crushing components 4 and a mixing mechanism 5.

[0021] Among them, two feeding hoppers 10 are connected to the top of the crushing and mixing box 1, and a feeding component 9 is provided inside each feeding hopper 10.

[0022] It should be noted that the two feed hoppers 10 are symmetrically arranged, and the feeding assembly 9 can feed the raw materials into the interior of the crushing and mixing box 1 and perform preliminary crushing on them to break large pieces of raw materials into small pieces, thereby avoiding large pieces of raw materials staying on the crushing knife group for too long, thereby improving the overall crushing efficiency.

[0023] Two first crushing shafts 11 are rotatably connected to the interior of the crushing and mixing box 1 , and a crushing blade group is provided on the first crushing shaft 11 .

[0024] Furthermore, the crushing knife group includes a plurality of first crushing knives 12, and the first crushing knives 12 on the two first crushing shafts 11 are staggered. The two first crushing shafts 11 are connected to an external driving mechanism. Through the external driving mechanism, the two first crushing shafts 11 can be driven to rotate in opposite directions, and the corresponding first crushing knives 12 can be driven to rotate in opposite directions to crush the raw materials.

[0025] The two transmission mechanisms 2 are respectively arranged on both sides of the crushing knife group. The transmission mechanism 2 includes two driving wheel groups 21, three driven wheel groups 22 and a tooth chain 23. Among them, the two driving wheel groups 21 are respectively connected to the corresponding first crushing shafts 11; the three driven wheel groups 22 are respectively rotatably arranged in the crushing mixing box 1, and the two driving wheel groups 21 and the three driven wheel groups 22 are connected by a tooth chain 23.

[0026] It should be noted that the two driving wheel groups 21 are located on the same horizontal line, and the three driven wheel groups 22 are located below the two driving wheel groups 21. The three driven wheel groups 22 form a triangular structure, and the driven wheel group 22 in the middle is arranged directly below the two crushing knife groups and is higher than the driven wheel groups 22 on both sides.

[0027] Furthermore, when the two first crushing shafts 11 rotate, with the cooperation of the two driving wheel groups 21, they can drive the tooth chain 23 to switch between clockwise and counterclockwise rotation, and then drive the screening mesh belt 3 to move back and forth to screen the crushed raw materials, ensuring the uniformity of the raw material particle size and improving the screening efficiency.

[0028] Both ends of the screening mesh belt 3 are respectively connected to the corresponding toothed chains 23 , and the screening mesh belt 3 is in a "W" shape; the two crushing assemblies 4 are respectively arranged in the two grooves of the screening mesh belt 3 , and the crushing assemblies 4 are connected to the driven wheel group 22 .

[0029] It should be noted that the screening mesh belt 3 is made of stainless steel. The screening mesh belt 3 can screen the crushed raw materials. The three driven wheel groups 22 are respectively arranged at the "W"-shaped bends. With the cooperation of the transmission mechanism 2, the screening mesh belt 3 can be driven to move back and forth, thereby speeding up the screening speed. The W-shaped structure of the screening mesh belt 3 can effectively disperse the raw materials, and its larger surface area significantly improves the screening efficiency.

[0030] Furthermore, during the screening process, large particles of raw materials are retained above the screening mesh belt 3 and will roll into the groove along the inclined screening mesh belt 3. At the same time, with the cooperation of the driven wheel group 22, the crushing assembly 4 can be driven to rotate to perform secondary crushing on the large particles of raw materials in the groove, thereby improving the crushing effect of the raw materials.

[0031] The mixing mechanism 5 is rotatably arranged below the screening mesh belt 3 ; a discharge port 13 is provided at the bottom of the crushing mixing box 1 , and a discharge assembly 6 is provided at the discharge port 13 .

[0032] In the embodiment of the present application, the mixing mechanism 5 can realize axial propulsion and radial stirring, ensuring that the material flows fully in the crushing and mixing box 1, and at the same time can disperse the raw materials, thereby improving the uniformity of mixing of multiple raw materials. The discharge component 6 can open the discharge port 13, thereby facilitating the transfer of the compound fertilizer after mixing.

[0033] In one embodiment of the present application, Figure 1 As shown, the driving wheel group 21 includes an incomplete gear 211, a complete gear 212, a driving shaft 213 and a first sprocket 214, wherein the driving shaft 213 is rotatably arranged on the inner wall of the crushing and mixing box 1; the incomplete gear 211 and the complete gear 212 are respectively arranged on the first crushing shaft 11 and the driving shaft 213, and there is a meshing relationship between the incomplete gear 211 and the complete gear 212; the first sprocket 214 is arranged on the driving shaft 213.

[0034] It should be noted that, see Figure 1 The meshing relationship between the two incomplete gears 211 and the corresponding complete gears 212 is not synchronized, that is, when one of the incomplete gears 211 is meshed with the corresponding complete gear 212, the other incomplete gear 211 is not meshed with the corresponding complete gear 212.

[0035] Furthermore, the two driving shafts 213 are respectively arranged on both sides of the two first crushing shafts 11. When the first crushing shaft 11 rotates, with the cooperation of the two incomplete gears 211, the two complete gears 212 are driven to rotate intermittently in the opposite direction (and the two complete gears 212 rotate asynchronously), and through the cooperation of the first sprocket 214, the tooth chain 23 is driven to rotate forward and reverse intermittently, and the screening mesh belt 3 is driven to move back and forth, thereby accelerating the screening speed.

[0036] In one embodiment of the present application, Figure 1 As shown, the driven wheel assembly 22 includes a driven shaft 221 and a second sprocket 222, wherein the driven shaft 221 is rotatably arranged on the inner wall of the crushing and mixing box 1; the second sprocket 222 is arranged on the driven shaft 221, and the second sprocket 222 and the first sprocket 214 are respectively engaged with the tooth chain 23.

[0037] In the embodiment of the present application, the toothed chain 23 can drive the second sprocket 222 and the driven shaft 221 to rotate, thereby driving the crushing assembly 4 to rotate.

[0038] In one embodiment of the present application, Figure 3 As shown, the crushing assembly 4 includes a second crushing shaft 41 and a plurality of second crushing knives 42 , wherein both ends of the second crushing shaft 41 are respectively connected to the corresponding driven shaft 221 ; and the plurality of second crushing knives 42 are evenly distributed on the second crushing shaft 41 .

[0039] Specifically, when the driven shaft 221 rotates, it can drive the second crushing shaft 41 to rotate, and then drive the second crushing knife 42 to rotate, so as to crush the raw materials in the groove of the screening mesh belt 3 again.

[0040] In one embodiment of the present application, Figure 1 As shown, the mixing mechanism 5 includes a central shaft 51, multiple dispersion components 52 and multiple spiral stirring blades 53, wherein the central shaft 51 is rotatably arranged below the screening mesh belt 3; multiple dispersion components 52 are arranged in a ring array around the central shaft 51; multiple spiral stirring blades 53 are respectively connected to the central shaft 51 through a first connecting rod 54, and the spiral stirring blades 53 are arranged in the space formed by the multiple dispersion components 52.

[0041] It should be noted that, see Figure 2 The central shaft 51 can be connected to one of the first crushing shafts 11 through a pulley and a belt. When the first crushing shaft 11 rotates, the central shaft 51 is driven to rotate through the cooperation between the pulley and the belt.

[0042] Furthermore, the dispersion component 52 and the spiral stirring blade 53 can rotate along with the central axis 51. During the rotation of the dispersion component 52, the raw materials can be scooped up and scattered, thereby achieving the purpose of dispersing the raw materials. The spiral stirring blade 53 achieves efficient stirring of the raw materials through axial propulsion and radial mixing, thereby improving the uniformity of mixing of multiple raw materials.

[0043] Furthermore, if Figure 6As shown, the dispersion component 52 includes a shovel plate 521, two groups of second connecting rods 522 and multiple dispersion blades 523, wherein the two groups of second connecting rods 522 are symmetrically arranged on the central axis 51; the shovel plate 521 is connected to the second connecting rod 522; and the multiple dispersion blades 523 are evenly distributed on the arc-shaped concave surface of the shovel plate 521, and the dispersion blades 523 are inclined.

[0044] It should be noted that the shovel plate 521 includes an arc-shaped plate and a baffle. The baffle is set at one end of the arc-shaped plate, and the other end of the arc-shaped plate is relatively sharp. When the central shaft 51 drives the shovel plate 521 to rotate, the sharper end of the shovel plate 521 is first inserted into the raw material.

[0045] Furthermore, the dispersion blades 523 can separate the shovel plate 521 into multiple spaces. After the shovel plate 521 shovels into the raw materials, it can bring the raw materials into different spaces, and follow the central axis 51 to rotate upwards and then sprinkle, thereby improving the uniformity of raw material mixing.

[0046] In one embodiment of the present application, Figure 7 As shown, the feeding assembly 9 includes a turning shaft 61 and a plurality of feeding plates 92 , wherein the turning shaft 61 is rotatably arranged in the feed hopper 10 ; and the plurality of feeding plates 92 are evenly distributed on the turning shaft 61 .

[0047] It should be noted that the flip shaft 61 is connected to an external motor, which can drive the flip shaft 61 and the feeding plate 92 to rotate, so as to preliminarily crush the large pieces of raw materials in the feed hopper 10 into small pieces.

[0048] In one embodiment of the present application, Figure 3 As shown, the discharge assembly 6 includes a turning shaft 61, multiple connecting plates 62 and a sealing plate 63, wherein the turning shaft 61 is rotatably arranged below the crushing mixing box 1; multiple connecting plates 62 are respectively arranged on the turning shaft 61, and the connecting plates 62 are connected to the sealing plate 63.

[0049] It should be noted that the blocking plate 63 is arranged corresponding to the discharge port 13, and the flip shaft 61 is connected to an external motor. The motor can drive the flip shaft 61 to rotate a certain angle, and drive the blocking plate 63 to rotate around the flip shaft 61 to expose the discharge port 13, and the mixed compound fertilizer is discharged through the discharge port 13.

[0050] Specifically, in the process of processing compound fertilizer, relevant personnel will put the weighed raw materials into the feed hopper 10 respectively, and the feeding component 9 can feed them into the interior of the crushing mixing box 1 and perform preliminary crushing on them to break large pieces of raw materials into small pieces.

[0051] Crushing process: Then, the small pieces of raw materials fall into the crushing mixing box 1, and the raw materials are crushed through the cooperation between the two crushing knife groups.

[0052] Screening: The raw materials after crushing will fall on the screening mesh belt 3, and after being screened by the screening mesh belt 3, they will fall into the bottom of the crushing mixing box 1. Some large particles of raw materials will be retained above the screening mesh belt 3 and slide along the inclined screening mesh belt 3 into the groove.

[0053] When the first crushing shaft 11 rotates, it can drive the driving wheel group 21 and the driven wheel group 22 to rotate, and drive the tooth chain 23 to rotate alternately clockwise and counterclockwise, and the screening mesh belt 3 rotates alternately clockwise and counterclockwise, thereby accelerating the screening speed.

[0054] Re-crushing: At the same time, the rotation of the driven wheel group 22 can also drive the crushing assembly 4 to rotate, so as to crush the large particles of raw materials in the grooves of the screening mesh belt 3 again, thereby improving the crushing effect of the raw materials.

[0055] Mixing process: The raw materials falling into the bottom of the crushing mixing box 1 are fully mixed by the mixing mechanism 5. After the mixing is completed, the various raw materials can be fully mixed. Figure 3 , the relevant personnel control the turning shaft 61 to rotate clockwise by a certain angle, and the discharge port 13 can be opened for discharge.

[0056] In summary, the compound fertilizer raw material crushing and mixing equipment of the embodiment of the present application adopts an integrated crushing-mixing integrated processing system to simultaneously complete the raw material particle size control and component homogenization, realize in-situ processing of raw materials, thereby saving equipment conversion time, simplifying processing steps, and improving the production efficiency of compound fertilizer.

[0057] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A compound fertilizer raw material crushing and mixing equipment, characterized in that: It includes a crushing and mixing box, two transmission mechanisms, a screening mesh belt, two crushing components and a mixing mechanism, wherein: The top of the crushing and mixing box is connected to two feeding hoppers, and each of the feeding hoppers is provided with a feeding assembly; The interior of the crushing and mixing box is rotatably connected to two first crushing shafts, and the first crushing shafts are provided with crushing knife groups; The two transmission mechanisms are respectively arranged on both sides of the crushing knife group, and the transmission mechanism includes two driving wheel groups, three driven wheel groups and a tooth chain, wherein: The two driving wheel groups are respectively connected to the corresponding first crushing shafts; The three driven wheel groups are rotatably arranged in the crushing and mixing box respectively, and the two driving wheel groups and the three driven wheel groups are connected through the gear chain transmission; Both ends of the screening mesh belt are respectively connected to the corresponding toothed chains, and the screening mesh belt is in a "W" shape; The two crushing assemblies are respectively arranged in the two grooves of the screening mesh belt, and the crushing assemblies are connected to the driven wheel group; The mixing mechanism is rotatably arranged below the screening mesh belt; A discharge port is provided at the bottom of the pulverizing and mixing box, and a discharge component is provided at the discharge port.

2. The compound fertilizer raw material crushing and mixing equipment according to claim 1, characterized in that: The driving wheel set includes an incomplete gear, a complete gear, a driving shaft and a first sprocket, wherein: The driving shaft is rotatably arranged on the inner side wall of the crushing and mixing box; The incomplete gear and the complete gear are respectively arranged on the first crushing shaft and the driving shaft, and there is a meshing relationship between the incomplete gear and the complete gear; The first sprocket is arranged on the driving shaft.

3. The compound fertilizer raw material crushing and mixing equipment according to claim 2, characterized in that: The driven wheel set includes a driven shaft and a second sprocket, wherein: The driven shaft is rotatably arranged on the inner side wall of the crushing and mixing box; The second sprocket is arranged on the driven shaft, and the second sprocket and the first sprocket are respectively engaged with the toothed chain.

4. The compound fertilizer raw material crushing and mixing equipment according to claim 3, characterized in that: The crushing assembly includes a second crushing shaft and a plurality of second crushing knives, wherein: Both ends of the second crushing shaft are respectively connected to the corresponding driven shaft; A plurality of the second crushing knives are evenly distributed on the second crushing shaft.

5. The compound fertilizer raw material crushing and mixing equipment according to claim 1, characterized in that: The mixing mechanism includes a central shaft, a plurality of dispersion components and a plurality of spiral stirring blades, wherein: The central shaft is rotatably arranged below the screening mesh belt; A plurality of said dispersion components are arranged in an annular array around said central axis; The plurality of spiral stirring blades are respectively connected to the central shaft through a first connecting rod, and the spiral stirring blades are arranged in a space formed by the plurality of dispersing components.

6. The compound fertilizer raw material crushing and mixing equipment according to claim 5, characterized in that: The dispersion assembly includes a shovel plate, two sets of second connecting rods and a plurality of dispersion blades, wherein: Two groups of the second connecting rods are symmetrically arranged on the central axis; The shovel plate is connected to the second connecting rod; The plurality of dispersing blades are evenly distributed on the arc-shaped concave surface of the shovel plate, and the dispersing blades are arranged obliquely.

7. The compound fertilizer raw material crushing and mixing equipment according to claim 1, characterized in that: The feeding assembly includes a rotating shaft and a plurality of feeding plates, wherein: The rotating shaft is rotatably arranged in the feed hopper; The plurality of feeding plates are evenly distributed on the rotating shaft.

8. The compound fertilizer raw material crushing and mixing equipment according to claim 1, characterized in that: The discharge assembly includes a turning shaft, a plurality of connecting plates and a blocking plate, wherein: The turning shaft is rotatably arranged below the crushing and mixing box; A plurality of connecting plates are respectively arranged on the turning shaft, and the connecting plates are connected to the blocking plates.

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