Three-dimensional granulated fertilizer production screening and conveying equipment

Abstract

The invention relates to the technical field of production screening and conveying, and particularly discloses three-dimensional granular fertilizer production screening and conveying equipment which comprises a mounting frame, a mounting ring is fixedly mounted on the upper end face of the mounting frame, protective shells are fixedly mounted on the front side face and the rear side face of the mounting ring, and a screening ring is rotatably mounted on the inner side of the mounting ring; discharging holes are evenly formed from the outer side circumferential face to the inner circumferential face of the screening ring in an annular array mode, and arc-shaped screening pieces are evenly and rotationally installed in the screening ring in an annular array mode. Arc-shaped discharging grooves are fixedly formed in the lower ends of the protection shells correspondingly, and conveying groove pipes are arranged on the outer sides of the arc-shaped discharging grooves correspondingly. By means of the technical scheme, the integrated operation process of screening, discharging and conveying is formed, the material flowing path is greatly shortened, material residues and scattering are reduced, meanwhile, the three-dimensional installation layout is compact and reasonable, the occupied area of equipment is remarkably reduced, and the space requirement of large-scale production is met.

Description

Technical Field

[0001] This invention relates to the field of production screening and conveying technology, and in particular to a three-dimensional granular fertilizer production screening and conveying equipment. Background Technology

[0002] In the production of granular fertilizer, the screening and conveying process is a key step to ensure the uniformity of fertilizer product quality, and it is necessary to achieve efficient screening and orderly conveying of granules.

[0003] Currently, most existing screening equipment adopts a planar screening structure with fixed screening components. It can only perform screening operations through a single aperture, making it difficult to adapt to the production needs of granular fertilizers with different particle sizes. Furthermore, particles tend to accumulate in the screening area during the screening process, resulting in low screening efficiency and poor grading effect.

[0004] Meanwhile, the screening and conveying processes of the existing equipment are independent of each other. The granular fertilizer after screening needs to be transferred with the help of an additional conveying device, which not only increases the equipment footprint, but also causes problems such as spillage and residue during material transfer, resulting in material waste.

[0005] In addition, the installation layout of traditional screening and conveying equipment lacks a three-dimensional design, the connection between various components is not tight enough, the overall operation stability is poor, it is difficult to meet the continuous operation requirements of large-scale granular fertilizer production, and seriously affects production efficiency and product quality. Summary of the Invention

[0006] The purpose of this invention is to provide a three-dimensional granular fertilizer production screening and conveying equipment to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a three-dimensional granular fertilizer production screening and conveying equipment, including an installation frame, an installation ring fixedly installed on the upper end face of the installation frame, protective shells fixedly installed on both the front and rear sides of the installation ring, and a screening ring rotatably installed on the inner side of the installation ring. The screening ring has a uniform array of discharge holes arranged in a ring from the outer circumference to the inner circumference. The inner ring of the screening ring has a uniformly rotating array of arc-shaped screening components. The lower end of the protective shell is fixedly installed with an arc-shaped feeding trough. The outer side of the arc-shaped feeding trough is provided with a conveying trough pipe. The conveying installation bag is rotatably installed inside the conveying trough pipe. The outer side of the conveying installation bag is rotatably installed with filling cavities at equal intervals. The conveying troughs are all rotatably mounted on the edge of the mounting frame.

[0008] Preferably, a first motor is fixedly installed on both the left and right sides of the mounting frame, a first gear is fixedly installed on the output shaft of the first motor, a first chain is rotatably installed on the outer circumferential surface of the first gear, a second gear is rotatably installed on the other end of the inner side of the first chain, and half-shaft wheels are fixedly installed on both the front and rear sides of the left first gear.

[0009] Preferably, an annular groove is formed on the inner circumferential surface of the mounting ring, a gear groove is formed inside the mounting ring, the gear groove and the annular groove are in a through state, a symmetrical chain groove is formed inside the mounting ring, a first chain is slidably installed inside the chain groove, and a second gear is rotatably installed inside the gear groove.

[0010] Preferably, an installation tube is fixedly installed at the upper end of the protective shell, the protective shell of the installation tube is in a through state, and a rotating tube is rotatably installed at the upper end of the inner part of the installation tube, the upper end of the rotating tube extending to the outside of the installation tube.

[0011] Preferably, an arc-shaped feeding trough is fixedly installed at the lower end of the protective shell, an airbag is fixedly installed at the left end of the arc-shaped feeding trough, an air inlet is opened from the left end face to the inside of the arc-shaped feeding trough, an air outlet is opened from the right end face to the inside of the arc-shaped feeding trough, an L-shaped material pipe is fixedly installed at the lower end of the arc-shaped feeding trough, and a conveying trough pipe is fixedly connected to the outer side of the lower end of the L-shaped material pipe.

[0012] Preferably, an annular groove is formed on the inner circumferential surface of the mounting ring, and a gear ring is rotatably mounted inside the annular groove. The gear ring meshes with the adjacent second gear. Screening rings are fixedly mounted on the left side surfaces of the gear ring. Three material outlets are evenly formed from the outer circumferential surface of the screening ring to the inner annular array, and the material outlets are located between adjacent discharge holes.

[0013] Preferably, a stepper motor is fixedly installed inside the gear ring. First adjusting rods are evenly rotatably mounted in a ring array on the circumferential surface of the output shafts at both ends of the stepper motor. The first adjusting rods are paired together and rotatably connected. A double-headed grooved rod is rotatably mounted on the other end of each of the two adjacent first adjusting rods. A double-headed telescopic rod is fixedly installed between the inner sides of the two adjacent double-headed grooved rods.

[0014] Preferably, a second adjusting rod is rotatably installed on the outer side of the other end of the double-headed grooved rod. A circular hole is opened from the outer circumference of the arc-shaped screening piece to the inside of the two adjacent second adjusting rods, and one end of the arc-shaped screening piece is in a through state to the other end.

[0015] Preferably, the lower end of the conveying trough is provided with a feed inlet, and an adjusting plate is rotatably installed at the lower end of the feed inlet. A flexible discharge bag is fixedly installed at the upper outer end of the conveying trough. Servo motors are fixedly installed on the front side of the lower end of the conveying trough. A cavity groove is provided on the left side of the inside of the conveying trough. A third gear is rotatably installed at both the upper and lower ends of the cavity groove. The outer side of the lower third gear is fixedly connected to the output shaft of the servo motor. A second chain is rotatably installed on the circumference of the third gear.

[0016] Preferably, a rotating shaft is fixedly installed at the center of the rear side of the third gear, and the other end of the rotating shaft extends into the interior of the conveying trough. A conveying installation bag is rotatably installed on the outer circumference of the upper and lower rotating shafts. A filling cavity is rotatably installed at equal intervals on the outer side of the conveying installation bag. An arc-shaped unloading plate is fixedly installed at the upper end of the interior of the conveying trough, and the right side of the arc-shaped unloading plate extends into the interior of the flexible discharge bag.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention effectively solves the problems of large footprint and material spillage caused by the independent setting of screening and conveying links in existing equipment by adopting an integrated three-dimensional structural design of installation frame, installation ring, screening ring, arc-shaped feeding trough, conveying trough pipe, conveying installation bag, and filling cavity. The installation ring is fixed to the upper end face of the installation frame, and the screening ring is rotatably installed inside the installation ring, which can directly screen the incoming granular fertilizer. The screened material is quickly introduced into the conveying trough pipe through the arc-shaped feeding trough at the lower end of the protective shell on both sides of the installation ring. Then, the conveying installation bag and the equally spaced filling cavity in the conveying trough pipe achieve orderly conveying, forming an integrated operation process of screening-feeding-conveying. This greatly shortens the material flow path, reduces material residue and spillage, and the three-dimensional installation layout is compact and reasonable, which significantly reduces the equipment footprint and meets the space requirements of large-scale production.

[0018] 2. This invention combines the first motor, gear, and chain transmission structure on both sides of the mounting frame with the meshing transmission design of the gear ring and screening ring inside the mounting ring. This solves the problems of low transmission efficiency and poor operational stability of traditional screening components, and also addresses the issue of a small amount of dust mixed in with the screened material. The first motor drives the second gear to rotate through the first gear and the first chain, which in turn drives the gear ring and screening ring to rotate stably. During rotation, the screening ring achieves efficient screening through the outer discharge hole and the inner arc-shaped screening component. The transmission structure is tightly connected, with low power transmission loss, effectively improving the rotational stability and screening efficiency of the screening ring, and avoiding the problem of incomplete screening caused by particle accumulation.

[0019] 3. This invention utilizes an arc-shaped screening component mounted in a rotating annular array inside the screening ring, along with an adjustment mechanism consisting of a stepper motor, adjusting rods, and a double-headed telescopic rod. This solves the problem of existing equipment having fixed screening apertures and being difficult to adapt to the production of granular fertilizers of different particle sizes. By driving the first and second adjusting rods in conjunction with the stepper motor, and coordinating with the telescopic adjustment of the double-headed telescopic rods, the spacing and angle of the arc-shaped screening component can be flexibly changed, thereby adjusting the screening aperture. This achieves precise grading and screening of granular fertilizers of different particle sizes without the need to replace screening components, significantly improving the versatility and applicability of the equipment, reducing production switching costs, and meeting diverse production needs. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a structural diagram of the main body of the present invention; Figure 2 This is a schematic diagram of the mounting ring and protective shell of the present invention; Figure 3 This is a schematic diagram of the mounting ring and mounting frame of the present invention; Figure 4 This is a sectional view of the mounting ring of the present invention; Figure 5 This is a schematic diagram of the installation tank and rotating tank of the present invention; Figure 6 This is a schematic diagram of the gear ring and screening ring of the present invention; Figure 7 This is a schematic diagram of the arc-shaped screening component of the present invention; Figure 8 This is a schematic diagram of the first chain of the present invention; Figure 9 This is a schematic diagram of the arc-shaped feeding trough of the present invention; Figure 10 This is a schematic diagram of the first gear, the first chain, and the second gear of the present invention; Figure 11 This is a schematic diagram of the mounting frame and conveying trough pipe of the present invention; Figure 12 This is a schematic diagram of the cavity groove of the present invention; Figure 13 For the present invention Figure 12 Enlarged view of point A in the middle; Figure 14 This is a schematic diagram of the second chain and the conveyor bag of the present invention; Figure 15 This is a schematic diagram of the loading wall and the arc-shaped unloading plate of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Mounting frame; 101. First motor; 102. First gear; 103. First chain; 104. Second gear; 105. Half-shaft wheel; 2. Mounting ring; 201. Annular groove; 202. Gear groove; 203. Chain groove; 204. Protective shell; 205. Mounting material pipe; 206. Rotating material pipe; 207. Arc-shaped feeding chute; 208. Airbag; 209. Air inlet; 210. Air outlet; 211. L-shaped material pipe; 3. Conveying trough pipe; 301. Feed inlet; 302. Adjustment 303. Plate; 304. Flexible discharge bag; 305. Servo motor; 306. Hollow cavity; 307. Third gear; 308. Second chain; 309. Rotating shaft; 300. Conveying and mounting bag; 310. Loading cavity; 311. Arc-shaped discharge plate; 4. Gear ring; 401. Screening ring; 402. Material inlet; 403. Discharge hole; 404. Stepper motor; 405. First adjusting rod; 406. Double-headed grooved rod; 407. Double-headed telescopic rod; 408. Second adjusting rod; 409. Arc-shaped screening component. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1 to 15 The present invention provides a technical solution: A three-dimensional granular fertilizer production screening and conveying device includes a mounting frame 1. A first motor 101 is fixedly mounted on both the left and right sides of the mounting frame 1. A first gear 102 is fixedly mounted on the output shaft of the first motor 101. A first chain 103 is rotatably mounted on the outer circumferential surface of the first gear 102. A second gear 104 is rotatably mounted on the other end of the inner side of the first chain 103. It should be noted that the first chain 103, the first gear 102, and the second gear 104 are all in a meshing state, so that the first chain 103 can drive the second gear 104 to rotate.

[0025] It should be noted that the interior of the second gear 104 is a recessed structure, and the meshing connection between the first chain 103 and the second gear 104 is slightly smaller than the outer diameter of the second gear 104. Therefore, during operation, the first chain 103 can rotate the second gear 104, and the second gear 104 can also drive the subsequent gear ring 4 to rotate.

[0026] With the above structure, during use, when the first motor 101 is started, the output shaft of the first motor 101 drives the first gear 102 to rotate. When the first gear 102 rotates, it drives the first chain 103 to rotate. When the first chain 103 rotates, it drives the second gear 104 to rotate. After the second gear 104 rotates, it can drive the subsequent gear ring 4 to rotate. (It should be noted that the second gear 104 on the right side meshes with the subsequent gear ring 4, while the second gear 104 on the left side does not mesh with the gear ring 4. This is because, during subsequent operations, the second gear 104 on the left side needs to operate at all times. If the second gear 104 rotates continuously at this time, it will cause the gear ring 4 to rotate synchronously with the screening ring 401, thereby affecting the material corresponding to the subsequent discharge hole 403.)

[0027] like Figure 8 As shown, half-shaft wheels 105 are fixedly installed on both the front and rear sides of the left second gear 104 (the half-shaft wheels 105 are located on the outer side of the subsequent mounting ring 2). During use, the left second gear 104 rotates and drives the half-shaft wheels 105 to rotate, thereby enabling the subsequent airbag 208 to squeeze-release-squeeze during the operation, so that the airbag 208 can generate airflow, which blows the material after screening and blows away the dust in the material.

[0028] A mounting ring 2 is fixedly mounted on the upper end face of the mounting frame 1. The mounting ring 2 is open at both ends, and an annular groove 201 is formed on its inner circumference. Symmetrical gear grooves 202 are also formed inside the mounting ring 2. The second gear 104 is installed inside the corresponding gear groove 202. Figure 4 As shown, a chain groove 203 is provided, and the interior of the chain groove 203 is used to allow the first chain 103 to rotate, as shown. Figure 4 As shown.

[0029] A gear ring 4 is rotatably mounted inside the annular groove 201. Screening rings 401 are fixedly mounted on both the front and rear sides of the gear ring 4. The outer circumferential surface to the inner circumferential surface of the screening rings 401 are evenly arranged with material inlets 402 and discharge holes 403 located between adjacent material inlets 402. Figure 6As shown, it should be noted that the discharge hole 403 has three diameters: small, medium, and large, corresponding to materials of different particle sizes. Therefore, during use, the second gear 104 on the right side will drive the gear ring 4 to rotate. After the gear ring 4 rotates, it will drive the screening ring 401 to rotate synchronously. At this time, the corresponding discharge hole 403 can be positioned at the bottom to achieve the subsequent screening operation.

[0030] Then, protective shells 204 are fixedly installed on both the front and rear sides of the mounting ring 2. The protective shells 204 are located on the outside of the screening ring 401, thus forming a sealing operation for the other two material ports 402 to prevent material leakage. It should be noted that the outer circumference of the top of the protective shell 204 is open to the inside, which is exactly the same size as the material port 402. Therefore, when the corresponding material port 402 is rotated to the top, it is exactly connected to the through port of the protective shell 204.

[0031] An installation tube 205 is fixedly installed at the upper end of the protective shell 204, and a rotating tube 206 is rotatably installed inside the upper ends of the two installation tubes 205, such as... Figure 5 As shown, during use, by rotating the rotating material pipe 206, it can connect with the outer conveying material pipe. At this time, the material enters the interior of the installation material pipe 205 along the rotating material pipe 206, and then passes through the material port 402 into the interior of the screening ring 401, thereby realizing the material transfer operation.

[0032] A stepper motor 404 with a double-headed output shaft is fixedly installed at the center of the gear ring 4. First adjusting rods 405 are evenly mounted in a circular array on the front and rear output shafts of the stepper motor 404. Figure 7 As shown, the first adjusting rods 405 are arranged in pairs. Therefore, a double-headed grooved rod 406 is rotatably mounted on the inner side of the end of each pair of first adjusting rods 405 away from the output shaft. A double-headed telescopic rod 407 is fixedly mounted between the inner sides of two adjacent double-headed grooved rods 406. Furthermore, a second adjusting rod 408 is rotatably mounted on the outer side of the other end of each of the two adjacent second adjusting rods 408. An arc-shaped screening component 409 is rotatably mounted on the other end of each of the two adjacent second adjusting rods 408. Figure 7 As shown, two adjacent arc-shaped screening components 409 form a group. It should be noted that, as Figure 7As shown, the arc-shaped screening component 409 in the upper left corner corresponds to the smallest diameter discharge hole 403, while the arc-shaped screening component 409 in the upper right corner corresponds to the medium diameter discharge hole 403, and the arc-shaped screening component 409 at the bottom corresponds to the largest diameter discharge hole 403. Therefore, during the operation, when it is necessary to screen materials of a certain diameter, the corresponding arc-shaped screening component 409 is used to agitate and screen the materials. At this time, because the two ends of the arc-shaped screening component 409 are in a through state to the inside, and the outer circumferential surface is provided with evenly arranged filter holes to the inside.

[0033] Therefore, during use, activating the double-headed telescopic rod 407 allows the corresponding double-headed grooved rods 406 to move closer or further apart, thereby adjusting the position of the first adjusting rod 405 and the second adjusting rod 408. During use, the two arc-shaped screening components 409 operating simultaneously can be in a staggered state, with one corresponding to the bottom layer material and the other to the shallow layer material, thus speeding up the screening operation.

[0034] Then, the stepper motor 404 is started. The output shaft of the stepper motor 404 will rotate the first adjusting rod 405. When the first adjusting rod 405 rotates, it will drive the double-headed grooved rod 406. The double-headed grooved rod 406 will drive the second adjusting rod 408. The second adjusting rod 408 will drive the arc-shaped screening component 409 to disturb and screen the material inside the screening ring 401. Qualified products will pass through the discharge hole 403 and enter the arc-shaped feeding trough 207. This is because the arc-shaped feeding trough 207 and the protective shell 204 are in a through state. In addition, a through hole is also opened from the lower outer circumference of the protective shell 204 to the inside. It should be noted that during use, the gear ring 4 can be made to drive the screening ring 401 to perform a fan-shaped motion, thereby further improving the screening efficiency.

[0035] An arc-shaped feeding groove 207 is fixedly installed at the lower end of the protective shell 204. An airbag 208 is fixedly installed at the rear end of the arc-shaped feeding groove 207, and a complete set of air inlets 209 are opened from the rear end face to the interior. An array of air outlets 210 are opened from the front end face to the interior of the arc-shaped feeding groove 207. Figure 9 As shown.

[0036] As described above, under the operation of the half-shaft wheel 105, the airbag 208 can generate airflow. The airflow enters the interior of the arc-shaped feeding trough 207 through the air inlet 209, thereby blowing air onto the falling material, so that the dust in the material can be blown away, and then discharged through the air outlet 210.

[0037] An L-shaped material pipe 211 is fixedly installed at the lower end of the arc-shaped feeding chute 207. Conveying trough pipes 3 are fixedly installed on the outer sides of the lower end of the L-shaped material pipe 211. It should be noted that the L-shaped material pipe 211 is a flexible structure, capable of bending, but it will not affect the material's falling operation. Figure 9 As shown.

[0038] The lower ends of the conveying trough pipe 3 are rotatably mounted on the inner edges of the mounting frame 1, such as... Figure 11 As shown, during the operation, the conveying trough 3 can rotate under the drive of the motor, thereby changing the conveying angle.

[0039] A feed inlet 301 is provided from the outer side to the inside of the lower end of the conveying trough pipe 3. The feed inlet 301 and the L-shaped material pipe 211 are in a through state. An adjusting plate 302 is rotatably installed at the lower end of the inside of the feed inlet 301. It should be noted that the adjusting plate 302 can only rotate inward and cannot rotate outward. Therefore, during use, it can help the material enter the interior of the loading cavity 310 and also prevent the material from sliding down.

[0040] A flexible discharge bag 303 is fixedly installed on the outer side of the upper end of the conveying trough pipe 3. It should be noted that the flexible discharge bag 303 and the conveying trough pipe 3 are in a continuous state. Furthermore, an arc-shaped discharge plate 311 is fixedly installed on the upper end of the inside of the conveying trough pipe 3, and the front end of the arc-shaped discharge plate 311 extends into the interior of the flexible discharge bag 303. Figure 15 As shown.

[0041] Secondly, a cavity 305 is provided on the left side inside the conveying trough 3, and a servo motor 304 is fixedly installed at the lower outer end. A third gear 306 is rotatably installed at both the upper and lower ends inside the cavity 305. A second chain 307 is rotatably installed on the circumferential surface of the third gear 306. The lower end of the third gear 306 is fixedly connected to the output shaft of the servo motor 304. A rotating shaft 308 is fixedly installed at the center of the rear end face of the third gear 306. The rotating shaft 308 extends into the interior of the conveying trough 3, and a conveying installation bag 309 is rotatably installed on its circumferential surface. A filling cavity 310 is rotatably installed at equal intervals on the outer surface of the conveying installation bag 309. Figure 14 As shown.

[0042] Therefore, during use, when the servo motor 304 is started, its output shaft will rotate the fixedly connected third gear 306. The rotation of the third gear 306 will then rotate the second chain 307 synchronously, which in turn will rotate the upper third gear 306 synchronously. At this time, the third gear 306 will rotate the rotating shaft 308 synchronously, which will then rotate the conveyor bag 309 synchronously. The rotation of the conveyor bag 309 will then rotate the loading chamber 310 synchronously. The loading chamber 310 will then receive the screened material. As operation continues, the loading chamber 310 will push the adjusting plate 302 to rotate, thus blocking the material and preventing it from slipping. When the corresponding loading chamber 310 and adjusting plate 302 separate, the adjusting plate 302 will automatically reset, allowing the material to enter the next loading chamber 310. It should be noted that the opening edge of the loading chamber 310 is relatively inward, thus not obstructing the entry of material. Figure 15 As shown, after the loading cavity 310 rotates 180 degrees at its top, the material inside will slide into the arc-shaped unloading plate 311 and then slide down through the flexible discharge bag 303. The loading cavity 310 rotates under the obstruction of the arc-shaped unloading plate 311. After separating from the arc-shaped unloading plate 311, the loading cavity 310 resets itself and proceeds to the next operation.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A three-dimensional granular fertilizer production screening and conveying equipment, characterized in that: The system includes an installation frame (1), an installation ring (2) is fixedly installed on the upper end face of the installation frame (1), a protective shell (204) is fixedly installed on both the front and rear sides of the installation ring (2), and a screening ring (401) is rotatably installed on the inner side of the installation ring (2). The screening ring (401) has a uniform array of discharge holes (403) on the outer circumferential surface to the inner circumferential surface, and the screening ring (401) has a uniformly rotating array of arc-shaped screening components (409) inside. The lower end of the protective shell (204) is fixedly installed with an arc-shaped feeding trough (207), and a conveying trough pipe (3) is provided on the outside of the arc-shaped feeding trough (207). A conveying installation bag (309) is rotatably installed inside the conveying trough pipe (3), and a loading cavity (310) is rotatably installed at equal intervals on the outer side of the conveying installation bag (309). The conveying trough pipes (3) are all rotatably installed on the edge of the mounting frame (1).

2. The three-dimensional granular fertilizer production screening equipment according to claim 1, characterized in that: The first motor 101 is fixedly installed on both the left and right sides of the mounting frame (1). The first gear (102) is fixedly installed on the output shaft of the first motor (101). The first chain (103) is rotatably installed on the outer circumferential surface of the first gear (102). The second gear (104) is rotatably installed on the other end of the inner side of the first chain (103). Half shaft wheels (105) are fixedly installed on both the front and rear sides of the left first gear (102).

3. The three-dimensional granular fertilizer production screening equipment according to claim 1, characterized in that: An annular groove (201) is provided on the inner circumferential surface of the mounting ring (2). A gear groove (202) is provided inside the mounting ring (2). The gear groove (202) and the annular groove (201) are in a through state. A symmetrical chain groove (203) is provided inside the mounting ring (2). A first chain (103) is slidably installed inside the chain groove (203). A second gear (104) is rotatably installed inside the gear groove (202).

4. The three-dimensional granular fertilizer production screening equipment according to claim 1, characterized in that: The upper end of the protective shell (204) is fixedly installed with an installation tube (205), and the installation tube (205) and the protective shell (204) are in a through state. The upper end of the installation tube (205) is rotatably installed with a rotating tube (206), and the upper end of the rotating tube (206) extends to the outside of the installation tube (205).

5. The three-dimensional granular fertilizer production screening equipment according to claim 4, characterized in that: The lower end of the protective shell (204) is fixedly installed with an arc-shaped feeding trough (207), the left end of the arc-shaped feeding trough (207) is fixedly installed with an airbag (208), the left end face of the arc-shaped feeding trough (207) is provided with an air inlet (209) to the inside, the right end face of the arc-shaped feeding trough (207) is provided with an air outlet (210) to the inside, the lower end of the arc-shaped feeding trough (207) is fixedly installed with an L-shaped material pipe (211), and the lower outer side of the L-shaped material pipe (211) is fixedly connected with a conveying trough pipe (3).

6. The three-dimensional granular fertilizer production screening equipment according to claim 5, characterized in that: An annular groove (201) is provided on the inner circumferential surface of the mounting ring (2). A gear ring (4) is rotatably installed inside the annular groove (201). The gear ring (4) meshes with the adjacent second gear (104). A screening ring (401) is fixedly installed on the left side of the gear ring (4). Three material inlets (402) are evenly provided from the outer circumferential surface of the screening ring (401) to the inner annular array. The material inlets (402) are located between adjacent discharge holes (403).

7. The three-dimensional granular fertilizer production screening equipment according to claim 6, characterized in that: A stepper motor (404) is fixedly installed inside the gear ring (4). The first adjusting rods (405) are evenly rotated and installed in a ring array on the circumferential surface of the output shafts at both ends of the stepper motor (404). The first adjusting rods (405) are in pairs and rotatably connected. The other end of each of the two adjacent first adjusting rods (405) is rotatably installed with a double-headed grooved rod (406). A double-headed telescopic rod (407) is fixedly installed between the inner sides of the two adjacent double-headed grooved rods (406).

8. The three-dimensional granular fertilizer production screening equipment according to claim 7, characterized in that: The other end of the double-headed grooved rod (406) is rotatably mounted with a second adjusting rod (408). The outer ends of the two adjacent second adjusting rods (408) are rotatably mounted with an arc-shaped screening component (409). The outer circumferential surface of the arc-shaped screening component (409) is provided with a circular hole, and one end of the arc-shaped screening component (409) is in a through state to the other end.

9. The three-dimensional granular fertilizer production screening equipment according to claim 1, characterized in that: The lower end of the conveying trough (3) is provided with a feed inlet (301). An adjusting plate (302) is rotatably installed at the lower end of the feed inlet (301). A flexible discharge bag (303) is fixedly installed at the upper end of the outer side of the conveying trough (3). A servo motor (304) is fixedly installed on the front side of the lower end of the conveying trough (3). A cavity groove (305) is provided on the left side of the inside of the conveying trough (3). A third gear (306) is rotatably installed at both the upper and lower ends of the cavity groove (305). The outer side of the lower third gear (306) is fixedly connected to the output shaft of the servo motor (304). A second chain (307) is rotatably installed on the circumference of the third gear (306).

10. The three-dimensional granular fertilizer production screening equipment according to claim 9, characterized in that: A rotating shaft (308) is fixedly installed at the center of the rear side of the third gear (306). The other end of the rotating shaft (308) extends into the interior of the conveying trough pipe (3). A conveying installation bag (309) is rotatably installed on the outer circumference of the upper and lower rotating shafts (308). A loading cavity (310) is rotatably installed at equal intervals on the outer side of the conveying installation bag (309). An arc-shaped unloading plate (311) is fixedly installed at the upper end of the interior of the conveying trough pipe (3). The right side of the arc-shaped unloading plate (311) extends into the interior of the flexible discharge bag (303).

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