An efficient and energy-saving processing equipment for the production of compound fertilizers

Abstract

The present invention discloses a processing device for the production of an efficient energy-saving compound fertilizer, specifically related to the field of fertilizer production. The processing device includes: a machine body, on which a feed hopper is arranged, and a multi-stage screening component is arranged inside the machine body. The multi-stage screening component includes a primary screening cylinder, a secondary screening cylinder, and a tertiary screening cylinder. The primary screening cylinder, the secondary screening cylinder, and the tertiary screening cylinder are arranged successively from inside to outside, and the filtering pore diameters of the primary screening cylinder, the secondary screening cylinder, and the tertiary screening cylinder gradually decrease step by step from inside to outside. The discharge end of the feed hopper extends into the primary screening cylinder. By setting a separation component, the compound fertilizer particles entering the secondary screening cylinder can be separated, avoiding the problem that the compound fertilizer particles entering the secondary screening cylinder accumulate at the bottom, affecting the screening of the compound fertilizer particles with smaller sizes by the qualified-sized compound fertilizer particles, and improving the screening efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer production, and more specifically, the present invention relates to a processing device for the production of an energy-efficient compound fertilizer. Background Art

[0002] Compound fertilizers refer to chemical fertilizers containing two or more main nutrient elements (nitrogen, phosphorus, potassium), which are usually used in agricultural production to provide the nutrients necessary for crop growth. The production and processing process of compound fertilizers involves multiple steps, including raw material preparation, mixing, granulation, drying, cooling, screening, and packaging, etc.

[0003] Currently, the screening of compound fertilizers mainly uses a multi-stage sieve drum for multi-stage screening to screen out compound fertilizer particles that are too large or too small. However, during the screening process, the number of compound fertilizer particles of qualified size is much larger than the number of compound fertilizer particles that are too large or too small. Therefore, during the screening process, as the compound particles gradually fall, after screening out the compound fertilizer particles with larger sizes, the compound fertilizer particles of qualified size and the compound fertilizer particles with too small sizes fall together. At this time, since the number of compound fertilizer particles of qualified size is much larger than the number of compound fertilizer particles with too small sizes, and the compound fertilizer particles of qualified size and the compound fertilizer particles with too small sizes are mixed together. In addition, during screening, the compound fertilizer particles of qualified size will be screened out and remain on the sieve drum, and then discharged together. Therefore, due to the accumulation of compound fertilizers, the compound fertilizer particles of qualified size will affect the screening of the compound fertilizer particles with smaller sizes, affecting the screening efficiency of compound fertilizers. Summary of the Invention

[0004] The processing device for the production of an energy-efficient compound fertilizer provided by the present invention aims to solve the following problem: When the existing multi-stage sieve drum screens compound fertilizers, since the number of compound fertilizer particles of qualified size is much larger than the number of compound fertilizer particles that are too large or too small, after screening out the compound fertilizer particles with larger sizes, then screen out the compound fertilizer particles with too small sizes in the compound fertilizer particles. However, during screening, the compound fertilizer particles of qualified size will be screened out and remain on the sieve drum, and then discharged together. Therefore, due to the accumulation of compound fertilizers, the compound fertilizer particles of qualified size will affect the screening of the compound fertilizer particles with smaller sizes, affecting the screening efficiency of compound fertilizers.

[0005] To achieve the above object, the present invention provides the following technical solution: A processing device for the production of an efficient energy-saving compound fertilizer, comprising: a machine body, on which a feed hopper is provided, and a multi-stage screening assembly is arranged inside the machine body. The multi-stage screening assembly includes a first-stage screening cylinder, a second-stage screening cylinder, and a third-stage screening cylinder. The first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder are arranged successively from the inside to the outside, and the filtering apertures of the first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder gradually decrease from the inside to the outside in sequence, and the discharge end of the feed hopper extends into the first-stage screening cylinder;

[0006] A driving assembly is arranged on the machine body, and the driving assembly is used to drive the first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder to rotate synchronously for screening;

[0007] A partition assembly is arranged inside the second-stage screening cylinder. The partition assembly includes a plurality of partitions evenly arranged in the circumferential direction, and the plurality of partitions are all fixedly arranged on the inner wall of the second-stage screening cylinder. The partition assembly separates the compound fertilizer particles falling onto the second-stage screening cylinder through the plurality of partitions.

[0008] In a preferred embodiment, the driving assembly includes a driving part, the driving part is fixedly installed on the machine body, the output end of the driving part is connected with a driving shaft, and a fixing frame is fixedly arranged on the driving shaft. The first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder are all fixedly arranged on the fixing frame.

[0009] In a preferred embodiment, a plurality of support rollers are rotatably arranged inside the machine body, and the first-stage screening cylinder, the second-stage screening cylinder, and the third-stage screening cylinder are in rolling contact with the corresponding support rollers.

[0010] In a preferred embodiment, the partition assembly further includes a hinged plate, the hinged plate is hinged to the end of the partition, and a stop block is fixedly arranged on the partition, and the stop block is in movable abutment with the hinged plate.

[0011] In a preferred embodiment, an intermittent feeding assembly is arranged inside the machine body, and the intermittent feeding assembly is used to intermittently feed the compound fertilizer screened by the first-stage screening cylinder onto the second-stage screening cylinder.

[0012] In a preferred embodiment, the intermittent feeding assembly includes a receiving plate, the end of the receiving plate is fixedly arranged inside the machine body, a vertical cavity and a circular cavity are formed on the receiving plate, the vertical cavity is communicated with the circular cavity, and the circular cavity is located in the middle of the vertical cavity. A driving member is fixedly arranged on the machine body, and a feeding cylinder is installed at the output end of the driving member. The feeding cylinder is located in the circular cavity, and two feeding grooves are formed on the feeding cylinder.

[0013] In a preferred embodiment, a buffer assembly is arranged inside the receiving plate, and the buffer assembly is used to buffer the compound fertilizer particles entering the feeding groove and located at the notch of the feeding groove.

[0014] In a preferred embodiment, the buffer assembly includes a buffer pad 1 and a buffer pad 2, wherein the buffer pad 1 is arranged on the inner wall of the material distribution trough, and the buffer pad 2 is arranged at the connection between the vertical cavity and the circular cavity.

[0015] In a preferred embodiment, a knocking assembly is provided in the body, and the knocking assembly includes a fixed shaft, the fixed shaft is fixedly provided on the inner wall of the body, an elastic member is fixedly provided on the fixed shaft, a knocking ball is fixedly connected to the end of the elastic member away from the fixed shaft, the knocking ball is in contact with the moving part of the secondary screening cylinder, a plurality of protrusions evenly distributed in the circumferential direction are fixedly provided on the secondary screening cylinder, and the knocking ball is in movably contact with the protrusions.

[0016] In a preferred embodiment, a discharge assembly is provided in the machine body, and the discharge assembly includes a side cover, which is fixedly provided in the machine body, the side cover is rotatably connected to the fixed frame, three discharge ports are provided at the bottom of the side cover, and three guide hoppers matching the corresponding discharge ports are provided at the bottom of the side cover.

[0017] The beneficial effects of the present invention are:

[0018] The present invention can separate the compound fertilizer particles entering the secondary screening cylinder by arranging a partition component, thereby preventing the compound fertilizer particles entering the secondary screening cylinder from piling up at the bottom, causing the problem that the qualified-sized compound fertilizer particles affect the screening of smaller-sized compound fertilizer particles, and improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0020] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0021] Figure 3 It is a cross-sectional structural schematic diagram of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the multi-stage screening component of the present invention.

[0023] Figure 5 for Figure 3 Enlarged view of part A.

[0024] Figure 6 This is another schematic diagram of the working state of the partition component of the present invention.

[0025] Figure 7 for Figure 3 Magnified view of part B.

[0026] Figure 8 for Figure 3Enlarged view of part C.

[0027] Figure 9 Schematic diagram of the working state of the intermittent feeding component of the present invention.

[0028] Figure 10 Schematic diagram of the structure of the buffer component of the present invention.

[0029] Figure 11 For Figure 3 Enlarged view of part D.

[0030] Figure 12 Schematic three-dimensional structure diagram of the discharging component of the present invention.

[0031] Figure 13 Schematic three-dimensional structure diagram of the side cover and the material guiding hopper of the present invention.

[0032] Reference numerals are: 1, machine body; 11, feeding hopper; 2, multi-stage screening component; 21, primary screening cylinder; 22, secondary screening cylinder; 23, tertiary screening cylinder; 3, driving component; 31, driving part; 32, driving shaft; 33, fixing frame; 34, supporting roller; 4, separating component; 41, partition board; 42, hinge plate; 43, stop block; 5, intermittent feeding component; 51, receiving plate; 52, vertical cavity; 53, circular cavity; 54, material distributing cylinder; 55, driving member; 56, material distributing groove; 6, buffer component; 61, first buffer pad; 62, second buffer pad; 7, knocking component; 71, fixing shaft; 72, elastic member; 73, knocking ball; 74, convex point; 8, discharging component; 81, side cover; 82, discharging port; 83, material guiding hopper. Detailed implementation manners

[0033] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0034] Referring to the attached Figures 1 to 5 , a processing device for producing high-efficiency and energy-saving compound fertilizers includes: a machine body 1, a feeding hopper 11 is arranged on the machine body 1, a multi-stage screening component 2 is arranged inside the machine body 1, the multi-stage screening component 2 includes a primary screening cylinder 21, a secondary screening cylinder 22 and a tertiary screening cylinder 23, the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23 are arranged in sequence from inside to outside, and the filtering apertures of the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23 gradually decrease step by step from inside to outside, and the discharging end of the feeding hopper 11 extends into the primary screening cylinder 21;

[0035] A driving component 3 is provided on the machine body 1. The driving component 3 is used to drive the primary screening cylinder 21, the secondary screening cylinder 22, and the tertiary screening cylinder 23 to rotate synchronously for screening.

[0036] A separating component 4 is arranged inside the secondary screening cylinder 22. The separating component 4 includes a number of partitions 41 evenly arranged in the circumferential direction, and the number of partitions 41 are all fixedly arranged on the inner wall of the secondary screening cylinder 22. The separating component 4 separates the compound fertilizer particles falling onto the secondary screening cylinder 22 through the number of partitions 41.

[0037] It should be noted that the partition 41 is arc-shaped, so that the compound fertilizer particles can move along the arc-shaped partition 41. And the partition 41 can be a polyurethane board, and the polyurethane board has certain buffering performance. When the compound fertilizer particles fall onto the partition 41, it can play a certain buffering effect on the compound fertilizer particles, and when the compound fertilizer particles directly fall onto the partition 41, it can reduce the problem of the compound fertilizer particles being broken due to impact. The discharge ports of the feed hopper 11 are two, and both discharge ports extend into the primary screening cylinder 21.

[0038] It should also be noted that the primary screening cylinder 21, the secondary screening cylinder 22, and the tertiary screening cylinder 23 are all conical, so that the compound fertilizer particles can move along the conical surface after entering the primary screening cylinder 21.

[0039] The implementation scenario is specifically as follows: By injecting compound fertilizer particles into the feed hopper 11, the compound fertilizer particles enter the primary screening cylinder 21 through the feed hopper 11. Then, the driving component 3 drives the primary screening cylinder 21, the secondary screening cylinder 22, and the tertiary screening cylinder 23 to rotate synchronously. During the rotation of the primary screening cylinder 21, the secondary screening cylinder 22, and the tertiary screening cylinder 23, the compound fertilizer particles are screened. When the primary screening cylinder 21 conducts a preliminary screening on the compound fertilizer particles, the compound fertilizer particles after the preliminary screening fall into the secondary screening cylinder 22 through the primary screening cylinder 21. At the same time, since the primary screening cylinder 21 and the secondary screening cylinder 22 are in the rotation process, the compound fertilizer particles falling into the secondary screening cylinder 22 can pass through the number of partitions 41 to separate the compound fertilizer particles falling into the secondary screening cylinder 22, thereby avoiding the problem that the compound fertilizer particles entering the secondary screening cylinder 22 accumulate at the bottom and affecting the screening of the compound fertilizer particles with smaller sizes by the qualified-sized compound fertilizer particles, and improving its screening efficiency. And only by driving with a speed reduction motor can the screening of the compound fertilizer be completed, which is efficient and energy-saving.

[0040] Further, referring to the attached drawings of the specification Figures 1 to 4, the driving assembly 3 includes a driving component 31, the driving component 31 is fixedly installed on the machine body 1, the output end of the driving component 31 is connected with a driving shaft 32, a fixing frame 33 is fixedly arranged on the driving shaft 32, and the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23 are all fixedly arranged on the fixing frame 33.

[0041] It should be noted that the driving component 31 is a reduction motor, and the reduction motor drives the driving shaft 32 to drive the fixing frame 33 to rotate. When the fixing frame 33 rotates, it can drive the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23 fixedly arranged on the fixing frame 33 to rotate, and screen the compound fertilizer particles through the rotation of the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23.

[0042] Further, referring to the attached Figure 3 of the specification, a plurality of support rollers 34 are rotatably arranged in the machine body 1, and the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23 are in rolling contact with the corresponding support rollers 34.

[0043] It should be noted that by adopting the rolling contact of the support rollers 34 with the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23, it can play an auxiliary supporting role for the primary screening cylinder 21, the secondary screening cylinder 22 and the tertiary screening cylinder 23.

[0044] In the above technical solution, the compound fertilizer particles falling on the secondary screening cylinder 22 are separated by the arc-shaped partition plate 41. However, since the secondary screening cylinder 22 is always in a rotating state, when the partition plate 41 at the bottom of the secondary screening cylinder 22 moves to the top position of the secondary screening cylinder 22 following the rotation of the secondary screening cylinder 22, although the partition plate 41 is arc-shaped and can hold a certain amount of compound fertilizer particles, when the number of compound fertilizer particles is large, it is difficult for the partition plate 41 to hold a large number of compound fertilizer particles. Then, during the rotation of the secondary screening cylinder 22, the compound fertilizer particles in the partition plate 41 at the top of the secondary screening cylinder 22 will fall, and there will always be a problem of compound fertilizer particles falling during the screening process, which will affect the screening process due to the continuous falling of the compound fertilizer particles and affect the screening efficiency. Therefore, the present invention also provides a hinged plate 42 on the partition plate 41 to block the compound fertilizer particles through the hinged plate 42 when the partition plate 41 moves from the bottom of the secondary screening cylinder 22 to the top of the secondary screening cylinder 22, avoiding the problem of compound fertilizer particles falling.

[0045] Specifically, referring to the attached Figures 5 to 7 of the specification, the separating assembly 4 further includes a hinged plate 42, the hinged plate 42 is hinged to the end of the partition plate 41, and a stop block 43 is fixedly arranged on the partition plate 41, and the stop block 43 is in movable abutment with the hinged plate 42.

[0046] It should be noted that by hingedly arranging a hinge plate 42 at the end of the partition plate 41, when the partition plate 41 is at the bottom position of the secondary screening cylinder 22, when the compound fertilizer particles fall into the secondary screening cylinder 22, under the action of the gravity of the compound fertilizer particles themselves, the compound fertilizer particles can push the hinge plate 42 to rotate, so that the compound fertilizer particles can fall into the inside of the partition plate 41. When the secondary screening cylinder 22 rotates and the partition plate 41 at the bottom moves to the top, under the blocking action of the stopper 43, the hinge plate 42 cannot rotate by a large angle. Therefore, when the partition plate 41 at the bottom moves to the top, the partition plate 41 can be flipped and reset under the self-weight of the hinge plate 42, so that the compound fertilizer particles can be blocked by the partition plate 41 to prevent the compound fertilizer particles from falling.

[0047] In the above technical solution, the compound fertilizer particles falling into the secondary screening cylinder 22 are separated by a plurality of partition plates 41. However, when the compound fertilizer particles first enter the primary screening cylinder 21, since the primary screening cylinder 21 is used to screen out the compound fertilizer particles with larger particles in the compound fertilizer particles, and the number of compound fertilizer particles with larger particles is relatively small compared to the compound fertilizer particles with qualified particle sizes. Therefore, when the compound fertilizer particles enter the primary screening cylinder 21, there will be a problem that a lot of compound fertilizer particles are screened and dropped into the secondary screening cylinder 22 together in a short time. At this time, there will be a problem that a large amount of compound fertilizer particles exist in some partition plates 41, while only a small amount of compound fertilizer particles exist in other partition plates 41. As a result, a large amount of fertilizer particles in some partition plates 41 still accumulate, which will affect the screening of smaller compound fertilizer particles and it is difficult to ensure the uniform distribution of the compound fertilizer particles. For this reason, the present invention proposes an intermittent feeding assembly 5, which makes the compound fertilizer particles evenly distributed in a plurality of partition plates 41 through intermittent feeding.

[0048] Specifically, referring to the attached drawings of the specification Figure 8 In the machine body 1, an intermittent feeding assembly 5 is provided. The intermittent feeding assembly 5 is used to intermittently feed the compound fertilizer particles screened by the primary screening cylinder 21 onto the secondary screening cylinder 22. The intermittent feeding assembly 5 includes a receiving plate 51. The end of the receiving plate 51 is fixedly arranged in the machine body 1. A vertical cavity 52 and a circular cavity 53 are formed on the receiving plate 51. The vertical cavity 52 is communicated with the circular cavity 53, and the circular cavity 53 is located in the middle of the vertical cavity 52. A driving member 55 is fixedly arranged on the machine body 1. The output end of the driving member 55 is provided with a feeding cylinder 54. The feeding cylinder 54 is located in the circular cavity 53, and two feeding grooves 56 are formed on the feeding cylinder 54.

[0049] It should be noted that the receiving plate 51 is arc-shaped, and the driving member 55 is a motor. When the compound fertilizer particles after being screened by the first-stage screening cylinder 21 are about to fall onto the second-stage screening cylinder 22, the receiving plate 51 first receives the compound fertilizer particles after being screened by the first-stage screening cylinder 21, so that the compound fertilizer particles move along the upper surface of the receiving plate 51 into the vertical cavity 52, and enter one of the material distribution grooves 56 through the vertical cavity 52. At the same time, the motor drives the material distribution cylinder 54 to rotate. During the rotation of the material distribution cylinder 54, through the two material distribution grooves 56, intermittent feeding of the compound fertilizer particles is realized. Thus, through the intermittent feeding of the compound fertilizer particles, the compound fertilizer particles can be evenly distributed and fall into several partition plates 41.

[0050] However, in the above technical solution, when intermittent feeding is performed through the intermittent feeding assembly 5, intermittent feeding is realized through the rotation of the material distribution cylinder 54 and the two material distribution grooves 56. As Figure 9 shown, the arrow direction is the rotation direction of the material distribution cylinder 54. When the compound fertilizer particles enter the vertical cavity 52 and then enter the material distribution groove 56 through the vertical cavity 52, when the material distribution groove 56 is full of compound fertilizer particles, at this time, the material distribution cylinder 54 is always rotating. If there is a situation as Figure 9 shown, when the compound fertilizer particles are stuck in the material distribution groove 56, then during the rotation of the material distribution cylinder 54, the compound fertilizer particles will be squeezed, resulting in the compound fertilizer particles being crushed, which affects the yield rate of the compound fertilizer particles. For this reason, the present invention proposes a buffer assembly 6 to reduce the possibility of the compound fertilizer particles being crushed.

[0051] Specifically, referring to the attached drawings of the specification Figure 10 , a buffer assembly 6 is provided in the receiving plate 51. The buffer assembly 6 is used to buffer the compound fertilizer particles entering the material distribution groove 56 and located at the notch of the material distribution groove 56. The buffer assembly 6 includes a first buffer pad 61 and a second buffer pad 62. The first buffer pad 61 is provided on the inner wall of the material distribution groove 56, and the second buffer pad 62 is provided at the connection between the vertical cavity 52 and the circular cavity 53.

[0052] It should be noted that by providing the first buffer pad 61 on the inner wall of the material distribution groove 56 and the second buffer pad 62 at the connection between the vertical cavity 52 and the circular cavity 53, when the compound fertilizer particles stuck in the material distribution groove 56 are encountered, a buffering effect is achieved to reduce the possibility of the compound fertilizer particles being crushed.

[0053] Further, referring to the attached drawings of the specification Figure 11A knocking assembly 7 is provided in the body 1, and the knocking assembly 7 includes a fixed shaft 71, and the fixed shaft 71 is fixedly provided on the inner wall of the body 1, and an elastic member 72 is fixedly provided on the fixed shaft 71. A knocking ball 73 is fixedly connected to one end of the elastic member 72 away from the fixed shaft 71, and the knocking ball 73 is in contact with the toggle of the secondary screening cylinder 22. A plurality of convex points 74 evenly distributed in the circumferential direction are fixedly provided on the secondary screening cylinder 22, and the knocking ball 73 is in movably contact with the convex points 74.

[0054] It should be noted that the elastic member 72 can be an elastic strip, and during the rotation of the secondary screening cylinder 22, the multiple protrusions 74 can contact the knocking ball 73 multiple times, so that the knocking ball 73 can knock on the secondary screening cylinder 22 multiple times, so that the secondary screening cylinder 22 can vibrate during the screening process, thereby improving the screening efficiency of the compound fertilizer particles by knocking and vibrating the secondary screening cylinder 22.

[0055] For further information, please refer to the attached manual. Figure 12 and Figure 13 A discharge assembly 8 is provided in the machine body 1, and the discharge assembly 8 includes a side cover 81, which is fixedly provided in the machine body 1, and the side cover 81 is rotatably connected to the fixing frame 33, and three discharge ports 82 are provided at the bottom of the side cover 81, and three guide hoppers 83 matching the corresponding discharge ports 82 are provided at the bottom of the side cover 81.

[0056] It should be noted that since the first-stage screening cylinder 21, the second-stage screening cylinder 22 and the third-stage screening cylinder 23 are set in a conical shape, the compound fertilizer particles can move along the conical surface during the screening process, so that the particles screened by the first-stage screening cylinder 21, the second-stage screening cylinder 22 and the third-stage screening cylinder 23 can move along the conical surface into the side cover 81, and be discharged through the discharge port 82 and the guide hopper 83, and then a collection box can be set under the guide hopper 83 to facilitate the collection of the compound fertilizer particles.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A high-efficiency and energy-saving compound fertilizer production processing equipment, characterized in that: include: A machine body (1), wherein a feed hopper (11) is arranged on the machine body (1), and a multi-stage screening component (2) is arranged inside the machine body (1), wherein the multi-stage screening component (2) comprises a primary screening cylinder (21), a secondary screening cylinder (22), and a tertiary screening cylinder (23), wherein the primary screening cylinder (21), the secondary screening cylinder (22), and the tertiary screening cylinder (23) are sequentially arranged from the inside to the outside, and the filter apertures of the primary screening cylinder (21), the secondary screening cylinder (22), and the tertiary screening cylinder (23) decrease step by step from the inside to the outside, and the discharge end of the feed hopper (11) extends into the primary screening cylinder (21); The machine body (1) is provided with a driving assembly (3), and the driving assembly (3) is used to drive the primary screening cylinder (21), the secondary screening cylinder (22), and the tertiary screening cylinder (23) to rotate synchronously for screening; A partition assembly (4) is arranged in the secondary screening cylinder (22), the partition assembly (4) comprising a plurality of partitions (41) evenly arranged in a circumferential direction, and the plurality of partitions (41) are fixedly arranged on the inner wall of the secondary screening cylinder (22), and the partition assembly (4) separates the compound fertilizer particles that fall onto the secondary screening cylinder (22) through the plurality of partitions (41); An intermittent feeding assembly (5) is arranged in the machine body (1), and the intermittent feeding assembly (5) is used to intermittently feed the compound fertilizer screened by the primary screening cylinder (21) onto the secondary screening cylinder (22); The intermittent unloading assembly (5) comprises a receiving plate (51), the end of which is fixedly arranged in the machine body (1), a vertical cavity (52) and a circular cavity (53) are provided on the receiving plate (51), the vertical cavity (52) and the circular cavity (53) are communicated with each other, and the circular cavity (53) is located in the middle of the vertical cavity (52), a driving member (55) is fixedly arranged on the machine body (1), a material distribution barrel (54) is installed at the output end of the driving member (55), the material distribution barrel (54) is located in the circular cavity (53), and two material distribution grooves (56) are provided on the material distribution barrel (54); A buffer component (6) is arranged in the receiving plate (51), and the buffer component (6) is used to buffer the compound fertilizer particles that enter the distribution trough (56) and are located at the notch position of the distribution trough (56); The buffer assembly (6) comprises a buffer pad 1 (61) and a buffer pad 2 (62); the buffer pad 1 (61) is arranged on the inner wall of the material distribution trough (56); and the buffer pad 2 (62) is arranged at the connection between the vertical cavity (52) and the circular cavity (53).

2. The high-efficiency and energy-saving compound fertilizer production processing equipment according to claim 1, characterized in that: The driving assembly (3) comprises a driving component (31), the driving component (31) being fixedly mounted on the machine body (1), the output end of the driving component (31) being connected to a driving shaft (32), a fixing frame (33) being fixedly mounted on the driving shaft (32), and the primary screening cylinder (21), the secondary screening cylinder (22) and the tertiary screening cylinder (23) being fixedly mounted on the fixing frame (33).

3. The high-efficiency and energy-saving compound fertilizer production processing equipment according to claim 2, characterized in that: A plurality of supporting rollers (34) are rotatably arranged in the machine body (1), and the primary screening cylinder (21), the secondary screening cylinder (22) and the tertiary screening cylinder (23) are in rolling contact with the corresponding supporting rollers (34).

4. The high-efficiency and energy-saving compound fertilizer production processing equipment according to claim 3, characterized in that: The partition assembly (4) further comprises a hinged plate (42), wherein the hinged plate (42) is hingedly connected to the end of the partition plate (41), and a stopper (43) is fixedly provided on the partition plate (41), wherein the stopper (43) is movably abutted against the hinged plate (42).

5. The high-efficiency and energy-saving compound fertilizer production processing equipment according to claim 4, characterized in that: A knocking assembly (7) is arranged in the machine body (1), and the knocking assembly (7) comprises a fixed shaft (71), the fixed shaft (71) is fixedly arranged on the inner wall of the machine body (1), an elastic member (72) is fixedly arranged on the fixed shaft (71), a knocking ball (73) is fixedly connected to one end of the elastic member (72) away from the fixed shaft (71), the knocking ball (73) is in contact with the movement of the secondary screening cylinder (22), a plurality of convex points (74) evenly distributed in a circumferential direction are fixedly arranged on the secondary screening cylinder (22), and the knocking ball (73) is in active contact with the convex points (74).

6. The high-efficiency and energy-saving compound fertilizer production processing equipment according to claim 5, characterized in that: A discharge assembly (8) is arranged in the machine body (1), and the discharge assembly (8) comprises a side cover (81). The side cover (81) is fixedly arranged in the machine body (1), and the side cover (81) is rotatably connected to a fixing frame (33). Three discharge ports (82) are arranged at the bottom of the side cover (81), and three guide hoppers (83) matching the corresponding discharge ports (82) are arranged at the bottom of the side cover (81).

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