Classifying screen for fertilizer production

Abstract

The utility model relates to the technical field of fertilizer screening, and discloses a classifying screen for fertilizer production, which comprises a base, universal wheels are fixedly connected to the bottom of the base, and a screening mechanism is arranged at the top of the base. In the screening process, a first motor drives a rotating shaft to drive a first cam to rotate by means of belt transmission, a second cam at the bottom of a shell is matched, and under the synergistic effect of a spring, the shell generates stable and regular up-and-down vibration; according to the vibrating mode, the fertilizer can be effectively and accurately screened on the first screening plate, the second screening plate and the third screening plate, fertilizer particles with different particle sizes are sequentially separated according to the hole diameters of the screening plates and discharged from the corresponding discharging ports, mutual interference during fertilizer discharging is avoided due to the staggered distribution design of the discharging ports, and the fertilizer discharging efficiency is improved. The screening precision and efficiency are improved, it is ensured that the graded fertilizer quality is uniform and stable, and the specific requirements for the fertilizer granularity in different agricultural production links are met.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer screening technology, specifically a grading screen for fertilizer production. Background Technology

[0002] In the field of fertilizer production, with the acceleration of agricultural modernization and the increasing demands for fertilizer quality, fertilizer grading has become a crucial step.

[0003] According to announcement number CN 214515904 U, a screening device for compound fertilizer production includes a casing, a storage tank, a screen plate, a motor, a mounting shell, and a dust collection box. The screen plate is installed at an incline in the middle of the casing. The screen plate has two openings, which are symmetrical about the middle of the screen plate. A screen mesh is installed in the opening. A recovery door is provided at the inclined downward end of the screen plate. The recovery door is hinged to one side of the middle of the casing. The motor is installed in the middle of the lower end face of the screen plate. The motor shaft is connected to a rotating shaft. Two mounting rods are symmetrically fixed on both sides of the rotating shaft. A brush is installed on the side of the mounting rod facing the screen plate.

[0004] This screening device for compound fertilizer production can remove dust from the screened fertilizer, protecting the respiratory health of workers. It also allows for easy cleaning of the screen, eliminating the need for workers to tap it to clear blockages and extending the screen's lifespan. While the device uses a single screen for fertilizer screening, modern agricultural production presents challenges due to the specific granule size requirements of different crops at different growth stages, making precise fertilizer grading difficult. Utility Model Content

[0005] The purpose of this invention is to provide a grading sieve for fertilizer production to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grading sieve for fertilizer production, comprising a base, a universal wheel fixedly connected to the bottom of the base, a push handle fixedly connected to the top left end of the base, a sieving mechanism provided on the top of the base, and limit mechanisms symmetrically arranged on the front and back right side of the top of the base;

[0007] The screening mechanism includes a fixed plate, which is symmetrically fixedly connected to the left and right sides of the bottom of the base. A spring is fixedly connected to the top of the fixed plate, and a fixed ring is fixedly connected to the top of the spring. A fixed rod is fixedly connected to the inner ring of the fixed ring, and a housing is fixedly connected to the top of the fixed rod. A first screening plate is fixedly connected to the inner wall of the housing near the top, a second screening plate is fixedly connected to the middle of the inner wall of the housing, and a third screening plate is fixedly connected to the inner wall of the housing near the bottom. A discharge cylinder is fixedly connected to the bottom of the housing near the right side. An L-shaped base is fixedly connected to the bottom of the base near the front, and a first motor is fixedly connected to the back of the L-shaped base. A first pulley is fixedly connected to the output shaft surface of the first motor. A first fixed frame is fixedly connected to the top left side of the base. A rotating shaft is rotatably connected to the inner surface of the first fixed frame. A second pulley is fixedly connected to the surface of the rotating shaft near the front end. A belt is sleeved between the first pulley and the second pulley. A first cam is symmetrically fixedly connected to the surface of the rotating shaft, and a second cam is symmetrically fixedly connected to the bottom left side of the housing.

[0008] Preferably, the discharge ports of the first screening plate, the second screening plate, and the third screening plate are staggered to avoid obstructing the discharge of the screened fertilizer.

[0009] Preferably, the back of the L-shaped base has a hole that matches the output shaft of the first motor, and the surface of the output shaft of the first motor passes through and is rotatably connected to the hole.

[0010] Preferably, the first fixing frame has a hole on its front side that matches the rotating shaft, and the rotating shaft surface passes through and is rotatably connected to the hole.

[0011] Preferably, the first cam and the second cam are on the same vertical line.

[0012] Preferably, the limiting mechanism includes a second fixed frame, which is symmetrically fixedly connected to the top right side of the base. A second motor is fixedly connected to the top of the second fixed frame, and a screw is fixedly connected to the output end of the second motor. A moving block is connected to the surface of the screw. Limiting rods are symmetrically fixedly connected to the top left and right sides of the second fixed frame. Sliding rods are symmetrically fixedly connected to the bottom left and right ends of the moving block, and a limiting plate is fixedly connected to the bottom end of the sliding rod.

[0013] Preferably, the top of the second fixing frame has a hole that matches the output shaft of the second motor, and the surface of the output shaft of the second motor passes through and is rotatably connected to the hole.

[0014] Preferably, the top of the movable block has a hole that matches the limiting rod, and the movable block is slidably connected to the surface of the limiting rod through the hole. The limiting rod limits the movable block, so that the movable block moves up and down as the screw rotates.

[0015] Preferably, the top of the base has a hole that matches the slide rod, and the slide rod is connected to the hole by sliding up and down through the surface of the slide rod.

[0016] Preferably, the bottom end of the screw is rotatably connected to the top of the base to support the screw and make the screw rotation more stable, and the bottom end of the limiting rod is fixedly connected to the top of the base.

[0017] Compared with the prior art, this utility model provides a grading sieve for fertilizer production, which has the following beneficial effects:

[0018] 1. This grading screen for fertilizer production, through a screening mechanism, is driven by a first motor during the screening process. A belt drive causes the rotating shaft to rotate the first cam, which, in conjunction with a second cam at the bottom of the housing, and with the aid of springs, causes the housing to vibrate stably and regularly. This vibration effectively promotes precise screening of fertilizer on the first, second, and third screening plates. Fertilizer particles of different sizes are separated sequentially according to the screen aperture and discharged from their respective outlets. Thanks to the staggered distribution design of the outlets, mutual interference during fertilizer feeding is avoided, improving screening accuracy and efficiency, ensuring uniform and stable quality of the graded fertilizer, and meeting the specific requirements for fertilizer particle size in different agricultural production stages.

[0019] 2. This grading screen for fertilizer production uses a limiting mechanism. A second motor drives the screw to rotate. Because the moving block is slidably connected to the limiting rod through a hole at the top, and the bottom end of the limiting rod is fixed to the base, the moving block moves up and down under the constraint of the limiting rod as the screw rotates. This, in turn, drives the sliding rod to move up and down, causing the limiting plate at the bottom of the sliding rod to move up and down. The bottom of the limiting rod contacts the ground, thus limiting the entire device and preventing it from moving due to vibration via the casters during operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0022] Figure 2 This is a three-dimensional schematic diagram of the screening mechanism of this utility model;

[0023] Figure 3 This is a three-dimensional sectional view of the front of the structural shell of this utility model;

[0024] Figure 4 This is a three-dimensional schematic diagram of the bottom of the shell structure of this utility model;

[0025] Figure 5 This is a three-dimensional schematic diagram of the structural limiting mechanism of this utility model.

[0026] In the diagram: 1. Base; 2. Casters; 3. Push handle; 4. Screening mechanism; 41. Fixing plate; 42. Spring; 43. Fixing ring; 44. Fixing rod; 45. Housing; 46. First screening plate; 47. Second screening plate; 48. Third screening plate; 49. Discharge cylinder; 411. L-shaped seat; 412. First motor; 413. First pulley; 414. First fixing frame; 415. Rotating shaft; 416. Second pulley; 417. Belt; 418. First cam; 419. Second cam; 5. Limiting mechanism; 51. Second fixing frame; 52. Second motor; 53. Screw; 54. Moving block; 55. Limiting rod; 56. Slide rod; 57. Limiting plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] This utility model provides the following technical solution:

[0030] Example 1

[0031] Please see Figure 1-4 This utility model provides a technical solution: a grading sieve for fertilizer production, including a base 1, a universal wheel 2 fixedly connected to the bottom of the base 1, a push handle 3 fixedly connected to the top left end of the base 1, a screening mechanism 4 provided on the top of the base 1, and a limit mechanism 5 symmetrically provided on the front and back of the top right side of the base 1.

[0032] The screening mechanism 4 includes a fixed plate 41, which is symmetrically fixed to the left and right sides of the bottom of the base 1. A spring 42 is fixedly connected to the top of the fixed plate 41, and a fixed ring 43 is fixedly connected to the top of the spring 42. A fixed rod 44 is fixedly connected to the inner ring of the fixed ring 43, and a housing 45 is fixedly connected to the top of the fixed rod 44. A first screening plate 46 is fixedly connected to the inner wall of the housing 45 near the top, a second screening plate 47 is fixedly connected to the middle of the inner wall of the housing 45, and a third screening plate 48 is fixedly connected to the inner wall of the housing 45 near the bottom. A discharge cylinder 49 is fixedly connected to the bottom of the housing 45 near the right side. The bottom of the base 1 is near the front. An L-shaped base 411 is fixedly connected to the base. A first motor 412 is fixedly connected to the back of the L-shaped base 411. A first pulley 413 is fixedly connected to the output shaft surface of the first motor 412. A first fixing frame 414 is fixedly connected to the top left side of the base 1. A rotating shaft 415 is rotatably connected to the inner surface of the first fixing frame 414. A second pulley 416 is fixedly connected to the surface of the rotating shaft 415 near the front end. A belt 417 is sleeved between the first pulley 413 and the second pulley 416. A first cam 418 is symmetrically fixedly connected to the surface of the rotating shaft 415. A second cam 419 is symmetrically fixedly fixed to the bottom left side of the housing 45.

[0033] The discharge ports of the first screening plate 46, the second screening plate 47, and the third screening plate 48 are staggered, which will not hinder the discharge of the screened fertilizer.

[0034] The back of L-shaped base 411 has a hole that matches the output shaft of the first motor 412, and the surface of the output shaft of the first motor 412 passes through and is rotatably connected to the hole.

[0035] The first fixing bracket 414 has a hole on its front side that matches the rotating shaft 415, and the rotating shaft 415 passes through the surface and is rotatably connected to the hole.

[0036] The first cam 418 and the second cam 419 are on the same vertical line.

[0037] Example 2

[0038] Please see Figure 5 Furthermore, based on Embodiment 1, a limiting mechanism 5 is obtained.

[0039] The limiting mechanism 5 includes a second fixed frame 51, which is symmetrically fixedly connected to the top right side of the base 1. A second motor 52 is fixedly connected to the top of the second fixed frame 51. A screw 53 is fixedly connected to the output end of the second motor 52. A moving block 54 is connected to the surface of the screw 53. Limiting rods 55 are symmetrically fixedly connected to the top left and right sides of the second fixed frame 51. Slide rods 56 are symmetrically fixedly connected to the bottom left and right ends of the moving block 54. A limiting plate 57 is fixedly connected to the bottom end of the slide rod 56.

[0040] The top of the second fixing bracket 51 has a hole that matches the output shaft of the second motor 52, and the surface of the output shaft of the second motor 52 passes through and is rotatably connected to the hole.

[0041] The top of the movable block 54 has a hole that matches the limiting rod 55, and the movable block 54 is slidably connected to the surface of the limiting rod 55 through the hole. The limiting rod 55 limits the movable block 54, so that the movable block 54 moves up and down with the rotation of the screw 53.

[0042] The top of the base 1 has a hole that matches the slide bar 56, and the slide bar 56 is connected to the hole by sliding up and down through the surface of the slide bar 56.

[0043] The bottom end of the screw 53 is rotatably connected to the top of the base 1 to support the screw 53 and make the rotation of the screw 53 more stable. The bottom end of the limit rod 55 is fixedly connected to the top of the base 1.

[0044] In actual operation, when this device is in use, the fertilizer production grading screen first starts the first motor 412. The output of the first motor 412 drives the first pulley 413 to rotate. Through the transmission of the belt, the second pulley 416 rotates, which in turn drives the first rotating shaft 415 to rotate. The first cam 418 on the surface of the rotating shaft 415 rotates accordingly. Since the first cam 418 and the second cam 419 on the bottom left side of the housing 45 are on the same vertical line, the rotation of the first cam 418 and the second cam 419 will alternately apply upward and downward forces to the housing 45. Combined with the elastic action of the spring 42, this causes the housing 45 to vibrate up and down. The material is transferred to the first screening plate 46, the second screening plate 47, and the third screening plate 48 inside the housing 45. The material enters from the top opening of the housing 45. During vibration, smaller granular fertilizer particles can fall through the screen holes of the first screening plate 46, while larger particles remain on the first screening plate 46 and move to the right to be discharged from its outlet. The fertilizer that passes through the first screening plate 46 continues to fall. Medium-sized granular fertilizer particles are intercepted by the second screening plate 47 and discharged from its outlet, while smaller particles continue to pass through the second screening plate 47. Finally, the smallest granular fertilizer particles pass through the third screening plate 48 and are discharged from the discharge cylinder 49 on the bottom right side of the housing 45, thereby achieving three-stage screening of the fertilizer.

[0045] The second motor 52 drives the screw 53 to rotate. Since the moving block 54 is slidably connected to the limiting rod 55 through the hole at the top, and the bottom end of the limiting rod 55 is fixed to the base 1, the moving block 54 will move up and down under the restriction of the limiting rod 55 as the screw 53 rotates, thereby driving the slide rod 56 to move up and down, causing the limiting plate 57 at the bottom of the slide rod 56 to move up and down. The bottom of the limiting rod 55 contacts the ground, thereby limiting the entire device and preventing the device from moving due to vibration via the casters 2 during operation.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A classifying screen for fertilizer production, comprising a base (1), characterized in that: The base (1) bottom is fixedly connected with universal wheels (2), the base (1) top left end is fixedly connected with a push handle (3), the base (1) top is provided with a screening mechanism (4), and the base (1) top right side is provided with a limiting mechanism (5) symmetrically arranged front and back; The screening mechanism (4) comprises a fixed plate (41), the fixed plate (41) is fixedly connected to the bottom of the base (1) on the left and right sides, the fixed plate (41) top is fixedly connected with a spring (42), the spring (42) top end is fixedly connected with a fixed ring (43), the fixed ring (43) inner ring is fixedly connected with a fixed rod (44), the fixed rod (44) top end is fixedly connected with a shell (45), the shell (45) inner wall is fixedly connected with a first screening plate (46) near the top, the shell (45) inner wall is fixedly connected with a second screening plate (47) in the middle, the shell (45) inner wall is fixedly connected with a third screening plate (48) near the bottom, the shell (45) bottom is fixedly connected with a discharge cylinder (49) near the right side, the base (1) bottom is fixedly connected with an L-shaped seat (411) near the front, the L-shaped seat (411) back is fixedly connected with a first motor (412), the first motor (412) output shaft surface is fixedly connected with a first belt pulley (413), the base (1) top left side is fixedly connected with a first fixed frame (414), the first fixed frame (414) inner surface is rotatably connected with a rotating shaft (415), the rotating shaft (415) surface is fixedly connected with a second belt pulley (416) near the front end, the first belt pulley (413) and the second belt pulley (416) are sleeved with a belt (417), the rotating shaft (415) surface is fixedly connected with a first cam (418) symmetrically front and back, and the shell (45) bottom left side is fixedly connected with a second cam (419) symmetrically front and back.

2. A classifying screen for fertilizer production according to claim 1, characterized in that: The discharge outlets of the first screening plate (46), the second screening plate (47) and the third screening plate (48) are staggered.

3. A classifying screen for fertilizer production according to claim 1, characterized in that: The L-shaped seat (411) back is provided with a hole matched with the first motor (412) output shaft, and the first motor (412) output shaft surface penetrates and is rotatably connected in the hole.

4. A classifying screen for fertilizer production according to claim 1, characterized in that: The first fixed frame (414) front is provided with a hole matched with the rotating shaft (415), and the rotating shaft (415) surface penetrates and is rotatably connected in the hole.

5. A classifying screen for fertilizer production according to claim 1 characterized in that: The first cam (418) and the second cam (419) are on the same vertical line.

6. A classifying screen for fertilizer production according to claim 1, characterized in that: The limiting mechanism (5) includes a second fixed frame (51), the second fixed frame (51) is fixedly connected to the top right side of the base (1) in front and back symmetry, the second fixed frame (51) top is fixedly connected with the second motor (52), the second motor (52) book output end is fixedly connected with screw rod (53), the screw rod (53) surface is connected with the moving block (54), the second fixed frame (51) inner top is fixedly connected with the limiting rod (55) in left-right symmetry, the moving block (54) bottom left and right ends are fixedly connected with the slide rod (56), the slide rod (56) bottom end is fixedly connected with the limiting plate (57).

7. A classifying screen for fertilizer production according to claim 6, characterized in that: The second fixed frame (51) top is provided with a hole matched with the output shaft of the second motor (52), and the output shaft of the second motor (52) surface penetrates and is rotatably connected in the hole.

8. A classifying screen for fertilizer production according to claim 6, characterized in that: The moving block (54) top is provided with a hole matched with the limiting rod (55), and the moving block (54) is slidably connected on the surface of the limiting rod (55) through the hole.

9. A classifying screen for fertilizer production according to claim 6, characterized in that: The base (1) top is provided with a hole matched with the slide rod (56), and the surface of the slide rod (56) penetrates and is slidably connected in the hole.

10. A classifying screen for fertilizer production according to claim 6, characterized in that: The screw rod (53) bottom end is rotatably connected to the top of the base (1), and the limiting rod (55) bottom end is fixedly connected to the top of the base (1).

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